Functioning agents of the Infestation appear in a variety of horrific forms. While some infested organisms take the relative shape and physical properties of a newly acquired host, older entities have taken unique and transformative shapes of their own, adapting to their environment over time, and absorbing new victims to feed their evolution.

—Lephantis Fragment

Deep within this millennia old Orokin-turned Infested ship lurks a creature created to fight in the Old War.

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 NekrosIcon272.png 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.


Throughout Phase 1, each of Lephantis' three heads will emerge of the ground before attacking, which causes knockdown to any nearby Tenno. In Phase 2, its main body can create shockwaves that knockdown.

Infested Corpus General Miscellaneous
Infested corpus.JPG
Introduced Undetermined
Tileset Derelict Codex Scans N/A
Ability Toxin Grenade
Spawn Infested Pod
Other Drops None
Statistics Mod Drops Mod TT 20px.png Parry 38.72%
Mod TT 20px.png Pressure Point 38.72%
Mod TT 20px.png Eleventh Storm 7.52%
Mod TT 20px.png Equilibrium 7.52%
Mod TT 20px.png Provoked 7.52%
Fossilized P1: 1200, P2: 396
DmgSlashSmall64.png +DmgBlastSmall64.png ++DmgCorrosiveSmall64.png +++DmgColdSmall64.png -DmgToxinSmall64.png ‐‐DmgRadiationSmall64.png ‐‐‐
Affinity 1000
The Infested Corpus head resembles a severely mutated Corpus helmet with a mouth taking up its entire face, with a set of tentacles on either side that cover it up when not attacking. It can spit deadly poison grenades at great distances, leaving behind DmgToxinSmall64.png Toxin clouds that deal high damage and ignore shields. It can also release Infested spawn pods similar to those dropped by Boilers which will spawn multiple basic Infested units over time until it is either destroyed or expires on its own, leaving behind a cloud of poison.

Infested Grineer General Miscellaneous
Infested grineer.JPG
Introduced Undetermined
Tileset Derelict Codex Scans N/A
Ability Scythe Other Drops None
Statistics Mod Drops Mod TT 20px.png Parry 38.72%
Mod TT 20px.png Pressure Point 38.72%
Mod TT 20px.png Eleventh Storm 7.52%
Mod TT 20px.png Equilibrium 7.52%
Mod TT 20px.png Provoked 7.52%
Fossilized P1: 1200, P2: 408
DmgSlashSmall64.png +DmgBlastSmall64.png ++DmgCorrosiveSmall64.png +++DmgColdSmall64.png -DmgToxinSmall64.png ‐‐DmgRadiationSmall64.png ‐‐‐
Base Multiplier Face: 2.0x
Affinity 1000
The Infested Grineer head has a three-pronged jaw and wields a massive organic scythe-arm. It will either swing its scythe in a wide horizontal sweep or downward with an overhead strike. The scythe is capable of destroying obstacles in the arena as well as inflicting knockdowns with every hit. Its face is located below the jaw, which appears to be the Grineer that was merged into Lephantis long ago; it will only reveal itself when it attacks.

Ancient Infested General Miscellaneous
Ancient Infested.JPG
Introduced Undetermined
Tileset Derelict Codex Scans N/A
Ability Sticky Bombs Other Drops None
Statistics Mod Drops Mod TT 20px.png Parry 38.72%
Mod TT 20px.png Pressure Point 38.72%
Mod TT 20px.png Eleventh Storm 7.52%
Mod TT 20px.png Equilibrium 7.52%
Mod TT 20px.png Provoked 7.52%
Fossilized P1: 1200, P2: 396
DmgSlashSmall64.png +DmgBlastSmall64.png ++DmgCorrosiveSmall64.png +++DmgColdSmall64.png -DmgToxinSmall64.png ‐‐DmgRadiationSmall64.png ‐‐‐
Affinity 1000
The Ancient Infested head sports a long, stout jaw as well as the "crown" that normal Ancients have on their backs. It will spit an arc of Spore Bombs that explode a second after hitting the ground. While the bombs have a wide radius and deal a high amount of damage, they do not ignore shields.

Damage Reduction[]

During phase 1, each of Lephantis's heads possesses an innate 60% DR. During phase 2, this is increased to 70% DR.

Lephantis also possesses Damage Reduction that scales depending on your weapon's damage. Damage is calculated by

Additionally, the damage is calculated using all health damage type modifiers, and is quantized. Critical hits have their damage doubled on top of the weapon's critical multiplier.

If a head is hit again within approximately 0.27 seconds, whether from multishot or simply firing again, the hit uses the following modifier instead:

In addition, during Phase 2, each head possesses a damage cap. The cap is calculated for each damage instance, not the sum of hits.


Phase 1[]

2013-09-20 00021.jpg

Throughout the fight, each of Lephantis's heads will emerge from the ground in intervals and attack, allowing players to hit them. They are all completely immune to damage except on their pink weak spots, which are only revealed when they attack: the Corpus head's weak spot is its mouth, the Ancient head's weak spot is its neck, and the Grineer head has two weak spots - the mouth and the "face", with the latter taking 2x damage.

The fight begins with the Infested Corpus head appearing first, and the Ancient Infested head following soon after. When enough combined damage has been dealt to the Corpus and Ancient heads, they will temporarily retreat and the Grineer head will emerge alone. After the Grineer head retreats, all three heads will be able to emerge and attack together.

Phase 2[]

J-2000. By, SoggyCow.jpg

Once all three heads have been defeated, the ground will rumble and all three heads will emerge at once, destroying the entire floor. Players will fall down into the ruins below, where the body of Lephantis resides. This area is darker and has small pools of electrified water, which cause players to take DmgElectricitySmall64.png Electricity damage when stepping in them.

Phase 2 is much the same as Phase 1, except all three heads are present at the same time and they cannot retreat, attached to its main body which stomps around and rotates in its arena. Once a head is defeated, it will explode and leave behind a stump on Lephantis' body that will periodically spit out Spore Grenades.

Once all heads have been destroyed, the body of Lephantis will collapse and explode.


  • Phase 1: Wait for Lephantis's heads to emerge and reveal their weakspot, then deplete their health.
  • Phase 2: All of Lephantis's heads are now permanently active. Repeat above once more.


  • LimboIcon272.png Limbo can be damaged by the Corpus and Infested heads' projectile attacks while in the Rift plane, so it is advisable to keep moving while in the Rift.
  • MesaIcon272.png Mesa cannot use her Peacemaker ability to damage the heads, as the ability targets the center mass of the body, rather than the damageable weak points.
  • The Lephantis fight may be made easier through a combination of slowing abilities that extend the window to attack its weak spots for longer
  • TitaniaIcon272.png Titania can use Razorwing130xDark.png Razorwing to stay airborne and easily avoid most of Lephantis' attacks while dealing high damage.
    • Targeting the heads however might become difficult, as Lephantis will re-position itself and seek after Titania's razorflies instead of Titania herself.
  • MirageIcon272.png Mirage with sufficient ability strength and energy can make the second phase much easier to survive with Eclipse130xDark.png Eclipse, due to the lower area being considered completely in shadow.
  • BansheeIcon272.png Banshee can potentially, although rarely, highlight a weak spot with Sonar130xDark.png Sonar, allowing for increased damage to it.
  • XakuIcon272.png Xaku can use TheLost130xDark.png The Lost's Gaze to "freeze" the first phase heads weak spots to easily dish out enough damage to one-shot it after the ability expires.
  • Players can scan the individual heads in the first phase and scan Lephantis' body in the second phase. However, only the body scan counts towards the Codex entry.
  • Using weapons that have innate punch through or using punch through mods can allow the user to shoot through invulnerable parts of Lephantis to hit the weak spots. This is only possible when weak spots are already revealed, as the heads otherwise have stages of total invulnerability.
  • Using a Specter and having it hold position can be useful to keep Lephantis from rotating or moving around, although the specter will despawn after phase transition.
  • If the player has attracted and spawned a Juggernaut, it is recommended to kill it before starting Lephantis' fight, as the Juggernaut will follow the player into the fight otherwise. This may make the fight significantly harder as Juggernaut's gas cloud attack affects a large area, which may be dangerous in the close quarters of the fight, and it can also spawn additional Infested enemies.
  • If tackling solo, with one or more specters, be aware that this mission will auto-fail if the player does not kill an enemy within 15 minutes (heads do not count, specter kills do not count).


  • Lephantis was previously known as the J-2000 Golem. It was originally going to replace the now retired J3-Golem boss on Jupiter, but was moved to the Orokin Derelict tileset instead.
  • Lephantis was the first boss to not directly drop a blueprint. Players would always get a blueprint for one of NekrosIcon272.png Nekros's components as a mission reward once they reach extraction. Later updates have since applied this to the other bosses.
  • Underneath the Infested Grineer head there is a person's face, akin to Dark Sector boss Mezner who also is fought in a large arena-type area and whose face is distorted and stretched over the Infested creature.
  • Lephantis' taunt sounds are similar to those of Lieutenant Lech Kril, albeit more distorted.
  • Originally upon defeating the three heads in Phase 1, the ceiling would break causing the floor to crumble from the falling debris. This was changed in favor of Lephantis breaking the ground directly.
  • Lephantis is currently the second-largest Assassination boss in the game, beaten only by the Jordas Golem.
    • Coincidentally, both are Infested bosses.
  • A hologram of Lephantis can be seen in the Dojo Bio Labs. Furthermore, to the left of the hologram one of Lephantis' legs is enclosed within one of the containers.
  • Each head of Lephantis may be a reference to The Three Wise Monkeys, with the Infested Ancient head covering the sides (which could represent ears), the Infested Grineer head covering an eye-like stalk, and the Infested Corpus head covering its mouth.
The Sacrifice Spoilers
  • Lephantis' line "Why do you destroy us? We are your flesh" heavily alluded to Warframes being Infested. This was in the game for 5 years before it was confirmed to be true in The Sacrifice.

Patch History[]

Hotfix 29.10.1 (2021-03-19)

  • Fixed missing combat music during the Lephantis boss fight.
    • Also fixes missing attack vocals + several improvements to the audio during this fight.

Update 27.1 (2020-02-04)

  • Fixed Lephantis sometimes not immediately dying after all three heads have been destroyed.

Update 25.7 (2019-08-29)

  • Fixed Lephantis targeting invisible Sentinels.

Hotfix 22.2.5 (2017-11-11)

  • Fixed not being able to defeat Lephantis due to his many heads not opening up to display his more vulnerable side.
  • Fixed the Infested Grineer head of Lephantis lingering above ground, allowing you to attack it mercilessly without fear of being harmed.

Update 22.2 (2017-11-01)

  • Fixed a file path text appearing in Lephantis’ boss fight.

Hotfix 22.0.8 (2017-10-20)

  • Partially fixed Lephantis' head not opening on some occasions. The issue hasn't been resolved completely, but there should be significantly fewer progression stoppers!

Update 21.2 (2017-07-26)

  • Fixed instances where the Client would administer more damage to Lephantis than the Host.

Update 19.12 (2017-03-02)

  • Fixed Lephantis (and possibly other enemies) not attacking resulting in incompletable Assassination missions.

Hotfix 19.6.1 (2017-01-13)

  • The ‘Find and defeat Lephantis in Orokin Derelict’ Eris Junction task will now retroactively complete if you have already killed Lephantis.

Update 19.6 (2017-01-11)

  • Fixed (for real) Clients not being able to complete the "Find and defeat Lephantis in Orokin Derelict" Eris Junction task.

Hotfix 19.5.6 (2017-01-04)

  • Fixed "Find and defeat Lephantis in Orokin Derelict" Eris Junction task only completing if the Assassination Key was used to run the mission.

Update 19.4.2 (2016-12-20)

  • Fixed a progress stopper during the Lephantis fight where players would find themselves stuck on the first stage with nothing to attack.

Update 19.1 (2016-11-25)

  • Fixed a progression stopping bug of the floor not opening up during the Lephantis fight.

Update: Specters of the Rail (2016-07-08)

  • Fixed an issue with Lephantis damage amounts being inconsistent between host and client.
  • Fixed an issue with players spawning above the combat area if revived during the second stage of the Lephantis fight.

Update 18.13 (2016-05-27)

  • Fixed Lephantis missing from the Codex.

Hotfix 18.7.1 (2016-03-31)

  • Lephantis no longer affected by Djinn's Fatal Attraction.

Hotfix 18.4.7 (2016-02-04)

  • Fixed electrified water during the second phase of the Lephantis fight damaging Limbo while in The Rift.

Update 17.5 (2015-10-01)

  • Fixed Lephantis’ stage 2 form not being able to be damaged from radial damage.
  • Fixed Lephantis rewarding each player four sigils on death, instead of one.

Update 16.10 (2015-06-25)

  • Fixed a typo in Lephantis’ in-game conversation text.

Hotfix 16.8.3 (2015-06-12)

  • Fixed players being able to reach the ceiling of Lephantis’ lair after the boss encounter has been completed.

Update 16.8 (2015-06-10)

  • Fixed radial damage not properly working against Lephantis.

Update 16.4 (2015-04-23)

  • Fixed an issue that caused Lephantis to become invisible and immune to damage.
  • Fixed localization descriptions on Lephantis Nav Coordinates, they now refer to Lephantis instead of Golem.

Hotfix 14.9.1 (2014-10-02)

  • Fixed Kubrows performing "struggle" attacks on Lephantis.

Hotfix 14.6.1 (2014-09-11)

  • Fixed navigation issues that prevented faithful Kubrow from joining in the fight against Lephantis.

Update 14.6 (2014-09-11)

  • Fixed a number of map holes in the Lephantis boss arena.

Hotfix 14.0.8 (2014-07-24)

  • Lephantis received some balancing: the Single player and Coop max levels have been lowered. The damage from Lephantis' Explosive Projectiles have been reduced.

Hotfix 14.0.5 (2014-07-21)

  • Fixed many bosses being Level 1 when they should be much higher.

Update 14.0 (2014-07-18)

  • Received balancing pass to improve their scaling for groups of high level Tenno, we hope they are a little more challenging!

Update 13.0 (2014-04-09)

  • Fixed players being able to teleport to unintended areas in the Lephantis boss room.

Hotfix 12.0.5 (2014-02-10)

  • Fixed spelling of Lephantis in transmissions.

Hotfix 12.0.1 (2014-02-06)

  • Fixed issues with text on Lephantis Transmissions.

Update 11.3 (2013-12-12)

  • Lephantis balancing, melee head lunge attack once again knocks down target.

Hotfix 11.0.3 (2013-11-22)

  • Lephantis melee secondary weakpoint takes 2x damage again.

Update 10.3 (2013-10-09)

  • Fixed issue where Sentinels were destroyed during Lephantis battle phase switches.

Hotfix 10.0.4 (2013-09-17)

  • The J-2000 Golem is now known as “Lephantis”.
  • Lephantis (Golem) now has an increased damage radius of grenade and gun attacks as well as reduced max incoming damage per second with a slight bump to health.
  • Increased Lephantis' (Golem) damage output for head and body attacks.

Update 10.0 (2013-09-13)

  • Introduced.

Last updated: Hotfix 22.3.4 (2017-11-16)