Chykka

From Wikitroid, the Metroid wiki

Chykka were a species of massive butterflies that lived in Dark Torvus on Dark Aether. Chykka are born as larva, who cocoon themselves to turn into the Chykka Adult. If a Chykka Adult falls into the poisonous water on Dark Aether, it will transform into the Dark Chykka, who can hatch Chyklings, miniature adults who can skip the larval stage entirely. A Chykka is fought in Metroid Prime 2: Echoes as the Guardian of Dark Torvus Temple. Defeating it earns Samus the Dark Visor. It seems Chykka are hermaphrodites.

In Samus's battle with Chykka, she must first free the Chykka Cocoon from a wall, which then hatches into a rather dim-witted Chykka Larva. The Larva will swim around Samus' platform, disturbing Dark Shredders whom Samus can destroy (and are mainly there for power-ups like Energy and such). The Chykka will eventually dive down, then burst up, crash into the water, and send shockwaves at Samus, much like the Jump Guardian, but on a larger scale. This is the time to damage Chykka. If Chykka's shockwaves get Samus, she will be pushed into the poisonous water. The Larva will sometimes leap into Samus' platform, trying to eat her. Samus must dodge the tongue and damage the Larva with beam weapons, as only those will work. If you hit the Larva's mouth two or three times with charged shots, the Chykka will be momentarily stunned - and you can take this opportunity to lock on to the lower weak point and fire a Super Missile to inflict massive damage.

Once Chykka is hurt enough, it will collapse and the water will slowly drain lower. Chykka will then quickly metamorphosise into the adult Chykka, who splits the platform into three pieces, each with a Light Crystal. Samus must then stun Chykka with Beam weapons (Dark Beam being most effective), grapple behind it, and damage its four weak spots on its back with missiles. Seeker Missiles will also work. A Super Missle will destroy it's weak point in one round.

Once all of Chykka's wings are damaged, it will fall into the water and fill its abdomen with the toxic water and becomes a Dark Chykka. It will blast Chyklings at Samus, and Samus must damage its abdomen; as a dark creature, charged Light Beam shots are most effective. After some time the water will drain away, and Samus must repeat the process. After dying fully, the door to Dark Torvus Temple will open, and Samus can transfer the energy back to Torvus Bog on Aether.

Humorously, after the Chykka is defeated, one can scan its dead corpse on the bottom of the upper part of the temple, which assures the player that this time the creature is gone for good.

Bosses in Metroid Prime series
Metroid Prime	Parasite Queen • Hive Mecha • Plated Beetle • Incinerator Drone • Flaahgra • Sheegoth • Thardus • Elite Pirate • Phazon Elite • Omega Pirate • Meta Ridley • Metroid Prime
Metroid Prime Hunters	Cretaphid • Slench • Fire Spawn • Arctic Spawn • Gorea
Metroid Prime 2: Echoes	Dark Alpha Splinter • Bomb Guardian • Jump Guardian • Dark Samus • Amorbis • Boost Guardian • Alpha Blogg • Grapple Guardian • Chykka • Spider Guardian • Power Bomb Guardian • Caretaker Class Drone • Quadraxis • Emperor Ing
Metroid Prime 3: Corruption	Berserker Lord • Meta Ridley • Rundas • Korakk • Mogenar • Steamlord • Defense Drone • Ghor • Helios • Gandrayda • Mining Cannon • Pirate Commander • Omega Ridley • Metroid Hatcher • Dark Samus • Aurora Unit 313