Ropalolyst

"Known and unknowable. This thing has haunted my life, waking and asleep, ever since I made that accursed bargain. A parasite at the core of my city. It drains my wealth, my power, my reactors... and my dignity.

This will not stand. I will see that horrendous thing destroyed.

I will be free."

- Alad V

The Ropalolyst, or commonly referred to by the community and the developers as Flying Eidolon or Flydolon, 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.

General
While referred to by the developers of the game as Flying Eidolon, no such in-game material refers Ropalolyst as one, leaving the Sentient's classification unknown.

Mask of the Revenant
Although perhaps not the same Ropalolyst, a hologram of the same Sentient breed can be seen shortly leaving the Gara Toht Lake in the Plains of Eidolon. Whether this is the same or different one with the Ropalolyst found in Jupiter remains unknown.

Behavior
Outside of its assassination node, the Ropalolyst can occasionally be seen outdoors, causing destruction to the city and leaving debris in its wake before flying off. The Ropalolyst cannot be attacked during this state.

During the assassination mission, the Ropalolyst is capable of flight. When grounded, it can walk on its blade-like "wings". It uses a variety of energy-based projectiles, and can even grab the Tenno with its claws.


 * Lasers: While hovering, thin lasers are fired from both of its claws which deals massive  damage, enough to take down the strongest tank build within few shots. Dodge at all costs.
 * Nullifying Scream: When a Tenno in Operator form performs a Void Dash, the Ropalolyst screams, forcing them back into their Warframe and nullyfing all Warframe abilities as well as temporarily preventing their use.
 * Electric Stream: When a Tenno tries to climb one of the ziplines leading to the capacitor towers, the Ropalolyst teleports to the platform and surges a chain between two of the ziplines that flow down, knocking the Tenno off if hit.
 * Giant Laser: When a Tenno is on the platform next to the capacitor towers, the Ropalolyst brings the tip of its wings together and fires a massive, continuous laser that deals heavy continuous damage.
 * Seeking Missiles: After being grounded for the first time, the Ropalolyst fires a series of projectile missiles with a slight homing ability.
 * Grab: While grounded, the Ropalolyst grabs the Tenno with its claws, disabling all their movement and abilities while they are held. The Tenno will gradually lose health while in the Ropalolyst's grip until they are released. They can escape the grab temporarily by entering Operator mode.

Phase 1
The Ropalolyst engages the Tenno while hovering in the air. There are three capacitor towers surrounding the main platform. Approach one of the towers, taking care to avoid the Electric Stream, and wait until the Ropalolyst fires its Giant Laser, luring it to hit the tower and supercharging it.

The Tenno must deplete the Ropalolyst's shields using damage via Operator's Void Beam. Once its shields are depleted, the Tenno can approach the Ropalolyst using their Warframe, giving the option to board it. While boarded, the Tenno can steer the Ropalolyst and ram it into the supercharged tower, knocking it back onto the main platform and grounding it. If the Tenno takes too long to steer it, they will automatically be knocked off and the Ropalolyst will regenerate its shields.

Phase 2
Grounded, the Ropalolyst will stomp around using its blade-like wings and use its Seeking Missiles and Grab and is reinforced by a small group of Amalgams. The two Ropalolyst Synovia on its hind legs become vulnerable, destroying one of them will temporarily stun it, allowing it to be vulnerable to the Terren Charger, a massive laser that is activated by a terminal on the main platform. If the Tenno take too long to activate the laser, any destroyed Synovia will fully regenerate.

Phase 3
Once injured by the Terren Charger, the Ropalolyst will resume flight. Simply repeat the above steps two more times until it dies. On the third grounding, Battalysts and Conculysts will appear instead of Amalgams, and the Ropalolyst's entire body becomes vulnerable to damage.

Activating the Terren Charger for the third and final time will obliterate the Ropalolyst, causing the main platform to collapse. The Tenno lands on part of the destroyed wreckage ready for extraction, as the Ropalolyst's corpse remains on the main platform while engulfed in flames.

Summary

 * Phase 1: Maneuver toward one of the capacitor towers, lure Giant Laser onto the tower, deplete Ropalolyst's shields with Operator Void Beam, mount Ropalolyst using Warframe, and steer Ropalolyst onto the supercharged tower.
 * Phase 2: Destroy Synovia with gunfire, activate Terren Charger terminal.
 * Phase 3: Repeat above two more times until it is defeated. On the final grounding, its entire body is vulnerable.

Trivia

 * It was first introduced in Devstream 100, under the name Fly-dolon, and was supposed to be encountered on Plains of Eidolon.
 * For this reason, many people believe that the Ropalolyst should be considered an Eidolon, however there are a couple of clues, such as the appearance of multiple Ropalolysts in the New War trailer, and the lack of the "Eidolon" name while it is fought, which might indicate that it is incorrect.
 * Interestingly, the battle against the Ropalolyst is somewhat similar to that against an Eidolon, as players have to use their Operator's Void Beam to deplete its shield first, before they can harm its two weak points with conventional weapons.
 * It should be noted that, unlike the Eidolon, the Ropalolyst has no spectral characteristics whatsoever.
 * A spectral silhouette of the Ropalolyst could be seen during the Mask of the Revenant quest.
 * Despite Nakak claiming 's power would be needed to combat the Sentient Eidolon, the Warframe has no bearing on the Ropalolyst fight.
 * Ropalo is Ancient Greek for "bludgeon". This may refer to the Ropalolyst's blunt limbs.
 * It could however also refer to Ropalidia, a genus of paper wasps, or Rhopalocera, which refer to butterflies, both alluding to the Sentient's ability to fly.
 * Along with the planet Mutalist Alad V and Jordas Golem on Eris, the Ropalolyst is among the only four bosses to share a planet, while not containing a shared node (in the case of Captain Vor and Lieutenant Lech Kril). The Ropalolyst shares Jupiter with Alad V, accessible to any player who has reached his node and completed the Chimera Prologue quest.
 * The Ropalolyst is the first Sentient boss occupying its own node.
 * Ropalolyst is also the first non-Landscape boss that requires power to defeat.
 * The head of the Ropalolyst bears a striking resemblance to Harrow's helmets.