Bosses are a unique enemy class outfitted with superior weapons, high health, rechargeable shields, special abilities, and other traits. They are far stronger than regular units as they will use varying strategies to deal damage and avoid taking it.
There are four types of bosses in the game:
- Regular Boss - Bosses which can be mostly found as the target of Assassination missions.
- Field Boss - Bosses that can be encountered on select mission types, though not usually the main objective.
- Assassin Boss - Bosses that actively hunt down players who possess their respective Death Marks.
- Grand Boss - Massive, titanic bosses with a special set of mechanics, designed to offer the players the highest level of challenge.
List of Bosses[]
Regular Bosses[]
These Bosses are found mostly on Assassination missions (with a few exceptions). Each boss usually has a set of lines to "taunt" the Tenno sent to kill them. They generally drop mods and resources upon death. Depending on which boss the player is fighting, Blueprints of Warframe parts and special Weapon parts will often be rewarded upon mission completion.
Grineer Faction[]
- Main article: Captain Vor
Captain Vor is the Grineer officer responsible for the players' awakening in the opening moments of WARFRAME. He is one of the few figures in the Origin System that understand ancient Orokin technology, and is capable of utilizing it and merging it with Grineer technology to create offensive weapons such as his trademark 
Seer pistol and his armor, powered by a Void Key that he refers to as the "Janus Key", which also grants him a powerful ranged beam attack, impenetrable shielding and the ability to teleport.
Captain Vor can be encountered in three locations currently, making him the most recurring boss in the game aside from the assassins. First appearing at the end of the Vor's Prize quest and thus being the first boss that players must fight, he also serves as the boss of Mercury; he then appears again on Ceres alongside Lieutenant Lech Kril; then appearing later yet again as a Corrupted version of himself within the Void.
- On Tolstoj, Mercury, a successful assassination will reward the Seer blueprint and components upon his defeat, and may also drop Orokin Cells. There is also a small chance of being rewarded a
Cronus blueprint. - On Exta, Ceres, the player will receive Frost component blueprints and either Miter parts or Twin Gremlins blueprint.
- Main article: Councilor Vay Hek
Councilor Vay Hek is the Grineer boss of Earth. He is among the most influential and dangerous Grineer, being responsible for the Cicero Toxin to poison Earth's forests, the reconditioning of the psychotic and highly aggressive The Grustrag Three soldiers, the Balor Fomorian warships that can destroy capital ships and Relays, and the animalistic and hastily bred Ghouls.
Vay Hek is fought on Oro, Earth, which can be accessed only by players of Mastery Rank 5 or higher. Upon defeating him and completing the mission, players will receive 
Hydroid component blueprints.
- Main article: Lieutenant Lech Kril
Lieutenant Lech Kril is the Grineer boss of Mars, and a dual boss on Ceres alongside Captain Vor. A revered war hero clad in impenetrable armor and armed with a 
Gorgon and his signature Brokk hammer with 
Cold/
Heat abilities, Lech Kril is a formidable adversary for anyone who opposes him.
- On War, Mars, a successful assassination will reward Excalibur's components.
- On Exta, Ceres, a successful assassination will reward Frost's components and either Miter parts or Twin Gremlins blueprint.
- Main article: General Sargas Ruk
General Sargas Ruk is the Grineer boss of the Saturn system. The head of one of the Grineer Artifact extraction projects, Sargas Ruk was targeted by the Lotus for annexing Tenno-controlled dig sites. Ruk enjoys Grineer augmentation, even going as far as replacing the lower part of his right arm with a massive flamethrower and his normal vision with a single augmentation in the center of his helmet.
Ruk is fought in the mission Tethys, Saturn. After defeating him and finishing the mission, the player will receive an 
Ember component blueprint. He has an increased chance to drop an Orokin Cell upon death since it can also drop it as a normal planet resource.
- Main article: Tyl Regor
Tyl Regor is the Grineer boss of the Uranus system. As the head researcher of Grineer gene repair, Regor works to remove the Cloning Decay Syndrome on his brethren, making strides through his "tubemen." Regor is fought in the mission Titania, Uranus. After defeating him and finishing the mission, the player will receive 
Equinox component blueprints.
- Main article: Kela De Thaym
Kela De Thaym is the Grineer boss of the Sedna system. Bloodthirsty and sadistic, she owns the combat arena known as Rathuum where Grineer defectors are forced to fight for their freedom against her Executioners, to the delight of her audience.
Kela is fought on the mission Merrow, Sedna. After defeating her and finishing the mission, the player will receive 
Saryn component blueprints. She will also drop an Executioner-themed mod and has a chance to drop 
Twin Kohmak blueprint and an Orokin Cell upon death.
- Main article: Balor Fomorian
The Balor Fomorian is the strongest class of all known Fomorian types, according to Councilor Vay Hek. They are considered the most powerful vessels in the Origin System. Bristling with immense firepower and formidable armor, they are capable of destroying a capital ship in a matter of seconds. Their power has made them the repeated targets of the Tenno, to prevent Grineer influence from spreading.
They are occasionally available in a Fomorian Sabotage alert as a Grineer Archwing boss, where the player may be rewarded with 
Imperator Vandal components, Endo, or Archwing mods upon defeating the Fomorian and extracting.
Corpus Faction[]
- Main article: Jackal
Jackal is the Corpus boss of the Venus system. Although a more bulky and old model compared to more recent Corpus robotics, the Jackal possesses invulnerable shields, a giant shockwave ability to knock players down, and one of the most powerful Corpus weapons, the Plasma Grenade Cluster. Dissected models of the Jackal can be found in some Grineer tilesets, either showing that the Grineer have an interest in utilizing Corpus technology, or that they have simply purchased merchandise.
The Jackal is fought on the mission Fossa, Venus. After defeating it and finishing the mission, the player will receive 
Rhino component blueprints, as well as a chance to get a 
Stahlta or 
Stropha blueprint.
- Main article: The Sergeant
The Sergeant, formerly known as Sgt. Nef Anyo before Update 16.4 (2015-04-23), is the final boss of Phobos system. He is in charge of the Corpus Solar Rail systems, using them to obtain Cryopods with dormant Warframes for resale to rogue scientists and splinter groups. When confronted by the player during the mission, he has a very aggressive tone towards the Tenno and warns the player that they are making a fatal mistake by attempting his assassination. He also may demand information regarding Orokin secrets, or make fun of the player's Warframe or teammates.
He can be found on the mission Iliad, Phobos. A successful assassination awards 
Mag component blueprints. The Sergeant has an increased chance to drop Morphics upon death.
- Main article: Alad V
Alad V was a high ranking Corpus member, seated on the Corpus Board of Directors and the head of Grineer Relations. He is the most recurring Corpus boss in terms of his involvements with various Events. Originally the creator of the ambitious Zanuka Project, an initiative to create advanced robotics by using Warframe components, its eventual failure saw him removed from the Board of Directors and replaced with his longtime rival, Frohd Bek.
Disgraced and on the run from his former Corpus backers, Alad eventually became obsessed with the promise of biological ascendancy via The Infestation, with the hopes of dominating the Origin System through his so-called "Mutalist Empire". His mind falling prey to the Infestation, Alad V went as far as using the Virus on his own body and sacrificing prototypes from his Zanuka Project.
After being defeated a second time and purging his body of the Infestation, Alad V had served as an unlikely ally of the Lotus and the Tenno, even attracting the hatred of the Stalker and his allies in the process.
He recently returned to the Corpus, though his miscomings lowered his reputation significantly. To make up for his faults, Alad V entered an unlikely partnership with Sentients and begun a new project in Amalgams, transforming Grineer and Corpus soldiers into hybridized Sentients.
Alad V is first encountered on Themisto, Jupiter as a Corpus boss, where he is accompanied by his robotic pet and guardian, Zanuka, which he built from Warframe parts that he gathered. Upon completion of this assassination mission, the player will receive 
Valkyr component blueprints. He is a good source of Neural Sensors.
- Main article: Raptors
The Raptors are Corpus Bosses found in the Europa system, with an underground factory working to mass produce these proxies. They are essentially modified Ospreys that boast increased power and defenses, and appear in three different types each armed with unique weaponry.
Raptors are fought in the mission Naamah, Europa. After defeating them and finishing the mission, players will receive a 
Nova component blueprint.
- Main article: Hyena Pack
The Hyena Pack are the Corpus bosses of Neptune, made up of four unique and deadly variants of the Hyena proxy. Functioning like a pack, each Hyena is equipped with a plasma repeater, high agility, and can wall cling.
The Hyena Pack are fought in the mission Psamathe, Neptune, and after defeating them and finishing the mission, the player will receive 
Loki component blueprints. They can also be found during Razorback Armada missions, and a completely different set of Hyena proxies exist on the Orb Vallis. Upon death, all the Hyenas have a chance of dropping Orokin Cells or Control Modules.
- Main article: Ambulas
Ambulas is the Corpus boss of Pluto, possessing a highly intelligent AI called Animo that allows it to learn and adapt from previous combat experiences to ensure that the proxy cannot be defeated by the same strategy twice. Animo was created by Ergo Glast during his time with the Corpus as a means of resolving conflict, only for Frohd Bek to misuse and weaponize it as part of Operation: Ambulas Reborn; fearing that Animo's learning may result in a repetition of the catastrophe which occurred when the Orokin made similar strides with advanced AI, Glast seeks the Tenno's aid to destroy the Animo processor.
Ambulas units are dispatched by Condor Dropships on any Corpus Outpost mission on Pluto; disabling and hacking into these units award Animo Nav Beacons which are required to initiate the Ambulas boss on the mission Hades, Pluto. After defeating it finishing the mission, the player will receive a 
Trinity component blueprint.
- Main article: Razorback
The Razorback is a Corpus boss introduced in the Divine Will Tactical Alert in Hotfix 18.4.10 (2016-02-11). A creation of Nef Anyo, the Razorback is essentially a much larger Jackal and is boastfully claimed to be "impervious to evil", but possesses a vulnerability to Nef Anyo's previous creations: the Bursas.
The Razorback is fought during a limited-time event, called Razorback Armada, once the construction status in the Invasion menu is completed by supporting the Corpus, appearing as a node next to any active Relay. Completing the Razorback Armada mission three times per event awards 
200,000 and a built Orokin Catalyst.
Infested Faction[]
- Main article: Phorid
Phorid is an 
Infested Boss only found when an Invasion takes over the Assassination mission of a Planet. After players defeat it and reach the extraction point, they will receive either a 
Nyx Neuroptics, Chassis, or Systems blueprint upon mission completion. Upon death, Phorid has a chance of dropping rare resources of the planet it appears on.
- Main article: Lephantis
Lephantis is a massive, multi-headed Infested boss created to fight in the Old War, introduced in Update 10.0 (2013-09-13). This large amalgamated creature consists of three heads called Infested Corpus, Infested Grineer, and Ancient Infested, which can seemingly extend and are attached to a tripod-like body hidden beneath the ground.
It is found on Magnacidium, Deimos. After defeating it and finishing the mission, the player will receive a 
Nekros component blueprint. Each of its heads are also capable of dropping Neurodes and Orokin Cells in addition to its main body, potentially totaling up to four resource drops.
- Main article: Juggernaut Behemoth
The Juggernaut Behemoth is the larger, boss variant of the Infested Juggernaut enemy.
It is a massive quadruped Infested creature, armed with formidable ranged attacks and deadly close-quarters combat abilities, which combined with its heavy armor makes it an intimidating opponent. Initially introduced in the Black Seed Scourge Tactical Alert, it can now be found in the last mission of The Jordas Precept, as well as the first portion of the Jordas Golem assassination mission.
- Main article: Jordas Golem
The Jordas Golem is a massive combat platform created out of an amalgamation of Infested flesh merged with Corpus ship technology and a corrupted Cephalon. It is one of the two bosses of Eris, the other being Mutalist Alad V.
It is found in its own Assassination node on Eris after a player has completed the Jordas Precept Quest. After defeating the Golem and finishing the mission, the player receives an 
Atlas component blueprint.
- Main article: Mutalist Alad V
Mutalist Alad V is a version of Alad V mutated and twisted by the Infestation. From his base on Eris, Alad V invented the Mutalist Strain, allowing the Infested to infect inorganic robotics and weaponry, before succumbing to the Infestation itself.
- Main article: Hemocyte
The Hemocyte is a gigantic Infested creature that can be encountered during Operation: Plague Star. It is summoned using an Infested Catalyst during the toxin mixing phase and drops the Hunter Set Mods.
- Main article: Zealoid Prelate
The Zealoid Prelate is an Infested Boss introduced during the fifth episode of Nightwave: Series 2 – The Emissary. It wields the 
Pathocyst Infested Glaive and, upon death, it drops one of the Pathocyst components.
Sentient Faction[]
- Main article: Ropalolyst
The Ropalolyst is a gigantic bird-like Sentient boss capable of flight. It can be found in the Remastered Corpus Gas City on its own Assassination node on Jupiter, requiring players to have completed Chimera Prologue to battle it. It was dispatched by the Sentients to ensure Alad V does not double-cross their "partnership", much to his displeasure.
After defeating the Ropalolyst, the player will receive 
Wisp component blueprints and an Amalgam mod from five possible.
Orokin Faction[]
- Main article: Nihil
Nihil is a mysterious serial killer known as the Glassmaker, a former Orokin judge responsible for "glassing" people throughout the Origin System. He is also the creator of the Cephalons, which he designed to be an eternal punishment for those that dare break Orokin law. He was introduced during Nightwave: Series 3 - The Glassmaker.
Field Bosses[]
Field Bosses are, as the name implies, boss-like enemies that may spawn during a certain set of mission. While some Field Bosses may be required to be killed to progress the objective, oftentimes they are not the main objective of the mission. Compared to regular, assassins and grand bosses, killing these bosses do not yield as many rewards.
Mission-Based[]
The following are the list of Field Bosses that spawn based on the mission type taken.
- Main article: Ven'kra Tel
Ven'kra Tel is a special Grineer Field Boss unit first introduced in Operation Gate Crash and now regularly encountered in Orokin Sabotage missions where Grineer are the dominant enemy. She, along with Sprag, guard a Void Key necessary to close the Void Portal.
She possesses a blue jet pack identical to that used by Hellions that grants her excellent mobility, and can use her 
Vulkar and other ranged special abilities to engage Tenno from afar.
- Main article: Sprag
Sprag is a Grineer Field Boss unit first introduced in Operation Gate Crash and now regularly encountered in Orokin Sabotage missions where Grineer are the dominant enemy. She, along with Ven'kra Tel, guard a Void Key necessary to close the Void Portal.
She possesses a jet pack identical to that used by Hellions that grants her excellent mobility, and can use her Manticore Axe and special melee abilities to engage Tenno in close combat.
- Main article: Lynx
The Lynx is a Corpus Field Boss. It is encountered in Orokin Sabotage (The Archwing or Marduk) where Corpus are the dominant enemy, guarding a Void Key necessary to close the Void Portal. It is also encountered in Grineer Spy, either purchased or stolen from the Corpus, detailing as one of the Spy room's centerpiece and becomes active if the room's alarm was tripped. It can also appear in Clem's weekly Survival mission in Corpus-controlled environments after five minutes.
It resembles a smaller Jackal with blue armor, and has the ability to deploy Lynx Osprey drones and Lynx Turrets to assist it in combat.
- Main article: Juggernaut
The Juggernaut is a large, quadrupedal Infested creature armed with formidable ranged attacks and deadly close-quarters combat abilities. Combining these threats with its heavy armor shell, the Juggernaut becomes an intimidating opponent. The Juggernaut's abilities include a charging body attack, a ranged spine strike (a scaled version of the Phorid's similar attack) and the ability to resurrect a number of nearby dead Infested.
- Main article: Corrupted Vor
Corrupted Vor is corrupted Captain Vor and is the boss of the Orokin Void as an encounter in the high-level Void missions (Level ≥40). It is known that he was revived by his own Void Key sometime after his defeat and has since turned into the guardian of the Void. Vor will make his presence known via a taunting transmission, after which he will appear near players to engage them in battle.
Upon defeat, he is guaranteed to drop one of the four status/elemental 
Toxin Mods: 
Malignant Force, Virulent Scourge, Pistol Pestilence and Toxic Barrage, along with either an Orokin Cell, Argon Crystal, or Control Module.
- Main article: Leekter
Leekter is a member of The Grustrag Three. He wields a Manticore axe and throws flashbangs to blind players in battle.
Although Leekter does not spawn by himself under normal circumstances, he may individually spawn inside Darvo's weekly mission as a Field Boss if the associated faction of the mission are Grineer.
- Main article: Shik Tal
Shik Tal is a member of The Grustrag Three. He wields a modified 
Marelok that fires small dumb-fire rockets (akin to those fired by Hellions) and a giant shield similar to Shield Lancers. Similar to the Shield Lancers themselves, he can use his shield to charge forward to knockdown and knockback players.
Although Shik Tal does not spawn by himself under normal circumstances, he may individually spawn inside Darvo's weekly mission as a Field Boss if the associated faction of the mission are Grineer.
- Main article: Vem Tabook
Vem Tabook is the leader of The Grustrag Three. He uses a modified 
Hek that fires electro-shells in bursts of around 10 at its target, each shell dealing electricity damage in a small radius, making them deadly should all of them connect with their target or the surrounding terrain.
Although Vem Tabook does not spawn by himself under normal circumstances, he may individually spawn inside Darvo's weekly mission as a Field Boss if the associated faction of the mission are Grineer.
- Main article: John Prodman
John Prodman is a rarely-encountered enemy in The Index. Similar to Clem, Prodman has his roots as an Internet meme within the WARFRAME community.
According to the description of his autograph, he is an employee of Anyo Corp, and was recently awarded "Employee of the Month".
- Main article: Kuva Lich
Kuva Liches are Grineer super soldiers that have been spiked with their Queens' Kuva, rendering them all but immortal. Kuva Larvlings that have the potential to become Liches are infused with the "old blood", and are armed with advanced Kuva weaponry and elite Thrall troops.
Acting as nemeses of the individual Tenno whose actions in battle have caused them to rise, Liches establish a foothold in the Star Chart. From there, they hinder the progress of the Tenno, seizing a portion of the loot gained from missions. Their Kuva-originated powers grant them invincibility in battle, that can only be broken by the Tenno who they are bound to - by discovering a sequence of enigmatic phrases inscribed on Requiem Mods, which the Tenno must unearth and apply to their Parazon in corresponding order, thus being able to purify the Lich's Kuva and permanently sever their Continuity. Every Kuva Lich has a unique name and various randomized properties.
Acolytes[]
- Main article: Acolytes
Acolytes are a group of Stalker-themed Field Bosses that spawn in Steel Path missions. They are guaranteed to drop 2 Steel Essence upon defeat.
- Main article: Misery
Misery is one of Shadow Stalker's acolytes. He takes the form of Nekros with an Immortal Skin, wearing Stalker's helmet and 
Oberon's loincloth, as well as modified Warframe Cosmetics including a Kyroptera Syandana and Daedalus Chest Plate codpiece.
Misery first appeared in Operation: Shadow Debt and, as of Update 29.5 (2020-11-19), now spawns in The Steel Path missions.
- Main article: Angst
Angst is one of Shadow Stalker's acolytes, first appearing in Operation: Shadow Debt. She takes the form of a Valkyr Warframe with an Immortal Skin, wearing Stalker's helmet and the Vanquished Syandana. She battles with the 
Hysteria claws.
As of Update 29.5 (2020-11-19), Angst can now spawn in The Steel Path missions.
- Main article: Malice
Malice is one of Shadow Stalker's acolytes, first introduced during Operation: Shadow Debt. He takes the form of 
Frost with a Prime Skin, minus his signature shoulder armor, with Stalker's helmet and large chunks of machinery around his body.
As of Update 29.5 (2020-11-19), Malice can now spawn in The Steel Path missions.
- Main article: Mania
Mania is one of Shadow Stalker's acolytes, first introduced during Operation: Shadow Debt. He takes the form of Loki with an Immortal Skin, wearing Stalker's helmet and a Daedalus Shoulder Plate.
As of Update 29.5 (2020-11-19), Mania can now spawn in The Steel Path missions.
- Main article: Torment
Torment is one of Shadow Stalker's Acolytes, first introduced during Operation: Shadow Debt. She takes the form of 
Mesa with Stalker's helmet, a Naberus shoulder piece, and some of Equinox's front tassels. She also uses an Eos chest plate for a codpiece, and the Eos spurs.
As of Update 29.5 (2020-11-19), Torment can now spawn in The Steel Path missions.
- Main article: Violence
Violence is one of Shadow Stalker's acolytes, first introduced during Operation: Shadow Debt. He takes the form of 
Limbo wearing Stalker's helmet and the pieces from the Hulta armor set.
As of Update 29.5 (2020-11-19), Violence can now spawn in The Steel Path missions.
Assassin Bosses[]
Assassins are rare bosses that randomly hunt players down outside of Assassination missions. They can only be spawned by players who have earned Death Marks through various means. Defeating these rare enemies may yield rare resources, parts, and blueprints.
Though they can spawn in most of the game, they cannot spawn in:
- Syndicate and Assassination standard missions
- Archwing, Free Roam and Arena special game modes
- Also includes Quest and Mastery Test solo-exclusive missions
- Sanctuary Onslaught and Elite Sanctuary Onslaught
- Non-combat hub "missions" (Relays, Dojos)
- Any mission that has already been "chosen" for the spawn of another Assassin or is forced due to beacons
- Main article: Stalker
The Stalker is an ominous, vengeful figure that infrequently appears during missions, armed with powerful weapons and abilities to hunt down Tenno who have his Death Mark.
The Stalker wears Warframe armor and is able to use ability powers belonging to various other Warframes. His arsenal is similar to that of the Tenno, utilizing a primary, secondary, and melee weapon. The Stalker's signature weapons are the bow 
Dread, the scythe 
Hate, and the throwing knives 
Despair.
If the Tenno marked for assassination has completed The Second Dream quest, they will be confronted with the more powerful, Sentient-enhanced Shadow Stalker instead.
- Main article: Shadow Stalker
The Shadow Stalker is an ominous, vengeful figure that infrequently appears during missions, armed with the 
War and powerful abilities to hunt down the Tenno. He appears during and after The Second Dream quest. Visually, the Shadow Stalker takes the form of a modified 
Excalibur with his own original helmet, and donning the Sentient-imbued Pakal Armor Set.
As seen in the aforementioned quest, the Shadow Stalker was gifted with Sentient powers and equipment by Hunhow, allowing him to adapt to damage continuously as well as releasing new forms of power. This appears to have cost him some of his previous abilities such as 
Absorb and 
Smoke Screen.
He can only be fought if the Tenno has confronted him during The Second Dream; if the Tenno in question has not, they will be confronted with the pre-Second Dream Stalker instead.
- Main article: Zanuka Hunter
The Zanuka Hunter, formerly known as the Harvester, is a gray-colored Zanuka proxy controlled by Alad V. During missions, it will attack one targeted Tenno until either the Tenno or Zanuka Hunter dies. It appears rarely, in a manner similar to the Stalker. Triggering a Zanuka Hunter attack requires a player to have a Death Mark, acquired by fighting against the Corpus across five Invasion missions, or it can be summoned by using a Zanuka Hunter Beacon.
- Main article: The Grustrag Three
The Grustrag Three (commonly abbreviated as the G3) are a group of Assassins, founded by Councilor Vay Hek, who come after Tenno that have completed five consecutive Invasion missions against the Grineer.
- Main article: Wolf of Saturn Six
The Wolf of Saturn Six is a rogue Grineer criminal introduced as an antagonist in Nightwave: Series 1 – The Wolf of Saturn Six. Formerly a model prisoner of the previously undisclosed Saturn Six penitentiary, the Wolf escaped along with his "pack" of Saturn Six Fugitives. He later underwent Sentient hybridizing after being enslaved by Alad V and sent to hunt down the Tenno. He eventually broke free once again, and disappeared alongside his comrades.
During Nightwave: Series 1, the Wolf could spawn randomly in almost any player-accessible mission, similar to Assassins but without the Death Mark. For the entire length of the Series, all players could be considered to have a permanent death mark. As Series 1 escalated, his spawn chances also increased incrementally.
Towards the end of Series 1, a Tactical Alert was issued to hunt down the Wolf in two Assassination-type missions of varying levels, with double the chance to drop 
Wolf Sledge components on the higher level mission (35% vs 70%).
Following the end of Nightwave: Series 1, Wolf Beacons can be bought from Nightwave Cred Offerings to forcibly draw out the Wolf.
Grand Bosses[]
Grand Bosses are massive, titanic bosses with specifically designed sets of mechanics, often with unique abilities not found in any regular missions, instead, in open-world regions such as Plains of Eidolon and Orb Vallis in forms of bounties. Equipped with far stronger offensive and defensive capability, Grand Bosses are significantly higher in difficulty and defeating them usually requires the execution of a complex strategy, as well as equipping powerful gears. They yield the rarest, and most exquisite rewards not found anywhere else in the system.
Eidolons[]
- Main article: Eidolon Teralyst
The Eidolon Teralyst is a gigantic spectral Sentient Eidolon creature that can be found aimlessly roaming around the Plains of Eidolon at night, acting as one of the Grand Bosses of the landscape. This is the first of the 3-night bosses of Plains of Eidolon, followed by Eidolon Gantulyst and then Eidolon Hydrolyst.
The Eidolons are remnants of a massive Sentient that was defeated in a battle against the Tenno during the Old War, whose remains now wander the plains perpetually searching for their lost components. These fragments are, however, still formidable creatures armed with powerful attacks and near-impenetrable defenses, and are hostile to both Tenno and Grineer alike.
It is important to note players that have not unlocked Transference from The War Within won't have any means to properly fight the Bosses.
- Main article: Eidolon Gantulyst
The Eidolon Gantulyst is an enormous spectral Sentient Eidolon creature that can be summoned on the Plains of Eidolon at night, acting as one of the Grand Bosses of the landscape. This is the second of the 3 night bosses of Plains of Eidolon, preceded by Eidolon Teralyst and followed by Eidolon Hydrolyst. Much larger than the preceding Eidolon Teralyst, this one has replaced its right arm with an elongated boulder, and its massive weight creates shockwaves with every step.
All Eidolons are remnants of a Sentient that was defeated in a battle against the Tenno during the Old War, whose remains now wander the plains perpetually searching for their lost components. These fragments are, however, still formidable creatures armed with powerful attacks and near-impenetrable defenses, and are hostile to both Tenno and Grineer alike.
It is important to note players that have not unlocked Transference from The War Within won't have any means to properly fight the Eidolon Gantulyst.
- Main article: Eidolon Hydrolyst
The Eidolon Hydrolyst is a titanic spectral Sentient Eidolon creature that can be summoned on the Plains of Eidolon at night, acting as one of the Grand Bosses of the landscape. This is the third and final of the 3 night bosses of Plains of Eidolon, preceded by Eidolon Teralyst and Eidolon Gantulyst. This one is large enough to wield the landing strut of an ancient spacecraft as a weapon, and its arcane energies create localized storm systems wherever it surfaces.
All Eidolons are remnants of a Sentient that was defeated in a battle against the Tenno during the Old War, whose remains now wander the plains perpetually searching for their lost components. These fragments are, however, still formidable creatures armed with powerful attacks and near-impenetrable defenses, and are hostile to both Tenno and Grineer alike.
It is important to note players that have not unlocked Transference from The War Within won't have any means to properly fight the Eidolon Hydrolyst.
Orb Mothers[]
- Main article: Profit-Taker Orb
Profit-Taker Orb is a large Raknoid creature found in Enrichment Labs in the Orb Vallis on top of the building, acting as one of the Grand Bosses of the landscape. The gargantuan creature can only be engaged during the Heist with Vox Solaris, requiring the rank of Old Mate within Solaris United.
The orb incorporates Sentient technology within its shields (which is put into overcharge by satellites) and is protected by an extremely durable carapace, making it seemingly invulnerable.
- Main article: Exploiter Orb
Exploiter Orb is a large Raknoid creature that can be found patrolling around the Temple of Profit within the Orb Vallis, acting as one of the Grand Bosses of the landscape. She is the one responsible for the destruction of Deck 12 which left many of its Solaris United survivors traumatized. The Exploiter Orb is battled in the ruins of Deck 12 located in a cave northeast of Harindi Crater, requiring a single Diluted Thermia from the recurring Thermia Fractures event.
Unlike the Profit-Taker Orb, the Exploiter Orb lacks Sentient adaptive shielding, but her carapace remains impervious to all gunfire. To defend herself, the Exploiter Orb can surround herself with a winter storm on command and has four vents across her lower body which spray jets of ice and an underbelly turret. Her main weakness of overheating is kept in check by her numerous exhaust vents as well as the small squad of Coolant Raknoids accompanying her.
Retired Bosses[]
These bosses have been removed from the game.
- Main article: Arn Etina
Arn Etina was once the name of the final boss of Pluto, a black MOA found on Hades. Upon death there was a chance he would drop one of the components required to build Excalibur. Arn Etina's name was changed to Ambulas as of Update 6.0 (2013-01-29).
Despite being a MOA, Arn Etina used a human-like game picture for their transmissions. The game picture and appearance have since been repurposed for Darvo.
- Main article: J3-Golem
J3-Golem was the final boss of the planet Jupiter. It was found on the mission Themisto. After defeating it and finishing the mission, players received a 
Volt Helmet, Chassis or Systems blueprint. As of Update 11, Volt blueprints no longer drops from Golem, but are now built in the clan dojo. Upon death, J3-Golem had a chance of dropping Neural Sensors.
Notes[]
- All bosses and assassins have a rare chance to drop an Orokin Cell upon death. This chance is fully separate from the planet's resource drop rate.
- As such, it is possible for General Sargas Ruk and Lieutenant Lech Kril to drop two instances of Orokin Cells, the first instance coming from the planet's rare drop and the second instance coming from the rare chance.
Patch History[]
Hotfix 29.5.4 (2020-11-25)
- Stalker and Acolytes have been given the fancy “boss Health bar” treatment!
Update 27.3 (2020-03-24)
- Kuva Lich Changes:
Based on feedback with the recent overhaul to Status Effects in Warframe Revised 27.2.0, the conversation of how Status Effects should react with Bosses or VIPS has started. Our first step down this road is starting with Kuva Liches. Currently, there are two special rules to this “Boss Status enabling”:
- No Status Effect will exceed a maximum of 4 stacks, with the exception of Impact which can stack up to 6 times.
- Keep in mind there is a cooldown to how quickly you can stack up Impact Status Effects to avoid stunlocking the Kuva Lich.
- Radiation does not change the enemy’s Faction, and instead of increasing Damage done to enemies with stacks, it increases the Damage taken from enemies who have turned on him/her.
We look forward to your constructive feedback and we work towards applying this to other Bosses/VIPS.
Update 26.0 (2019-10-31)
- Added new boss health bar introduced in the Emissary boss fight to all bosses except Jackal, Vor and Lech Kril, the Raptor, Hyena Pack, Ambulas and Lephantis.
Update 25.7 (2019-08-29)
- Fixed abusing Host migrations to get multiple Beacon assassin spawns. Beacons will be ineligible to place after a Host migration if someone had already summoned an assassin previously.
Update 18.5 (2016-03-04)
- Warframe Resistance and Immunity Changes
The following changes have been made to Warframe Ability powers when used against boss-type enemies. These changes do not affect the damage each Ability.
- Zephyr’s Tornado and Dive Bomb will no longer ragdoll boss-type enemies.
- Zephyr’s Tailwind will no longer be able to knockdown boss-type enemies.
- Valkyr’s Paralysis will no longer be able to stun boss-type enemies.
- Valkyr’s Warcry now has diminishing returns against boss-type enemies.
- Saryn’s Venom will be able to properly spread and receive spores from nearby boss-type enemies.
- Volt’s Shock and Overload will no longer be able to electrocute boss-type enemies.
- Hydroid’s Tidal Wave will no longer ragdoll boss-type enemies.
- Hydroid’s Undertow will no longer pull in boss-type enemies.
- Tentacle Swarm will no longer be able to grab boss-type enemies unless they’ve died.
- Ivara’s Sleep Arrow now has diminishing returns against boss-type enemies.
- Ivara’s Prowl will no longer be able to steal from boss-type enemies.
- Limbo’s Banish will no longer be able to ragdoll or move boss-type enemies into the Rift.
- Loki’s Radial Disarm will no longer be able to disarm, stun or dismember boss-type enemies.
- Loki’s Irradiating Disarm Augment will no longer be able to confuse boss-type enemies.
- Mag’s Pull will no longer move boss-type enemies.
- Mag’s Crush will no longer lift or ragdoll boss-type enemies.
- Mag’s Fracturing Crush Augment will no longer stop boss-type enemies.
- Banshee’s Sonic Boom, Silence, and Sound Quake will no longer be able to push, stun, or stagger boss-type enemies.
- Ember’s Accelerant will no longer be able to stun boss-type enemies.
- Ember’s World on Fire will no longer be able to knockdown boss-type enemies.
- Equinox’s Rest & Rage will now slow boss-type enemies instead of putting them to sleep.
- Excalibur’s Radial Blind and Radial Javelin will no longer stagger boss-type enemies.
- Frost’s Freeze and Avalanche will no longer freeze boss-type enemies.
- Frost’s Snow Globe will no longer freeze or push boss-type enemies.
- Rhino’s Charge will no longer ragdoll boss-type enemies.
- Rhino’s Stomp will no longer put boss-type enemies in stasis.
- Mesa’s Shooting Gallery will no longer jam or stun boss-type enemies.
- Mesa’s Muzzle Flash Augment will no longer blind boss-type enemies.
- Oberon’s Smite will no longer ragdoll boss-type enemies.
- Oberon’s Reckoning will no longer put lift boss-type enemies.
- Nyx’s Mind Control and Chaos now have diminishing returns against boss-type enemies.
- Nekros’ Terrify will no longer fear boss-type enemies, but will continue to apply an armor reduction debuff.
- Nekros’ Shadows of the Dead will no longer be able to summon boss-type enemies.
- Nezha’s Divine Spears will no longer pin or ragdoll boss-type enemies.
- Vauban’s Bounce will no longer bounce boss-type enemies.
- Vauban’s Bastille will slow boss-type enemies instead of lifting and placing them in stasis.
Update 10.3 (2013-10-09)
- Bosses now have their blueprint drops as end-mission rewards (like Lephantis) instead of physical orbs in the level.
