Dark Alpha Splinter

From Wikitroid, the Metroid wiki

A Dark Alpha Splinter was the result of the Ing merging with an Alpha Splinter, turning it into a dark-energy spitting giant Dark Splinter. Curiously enough, most players consider the Dark Alpha Splinter much easier than the normal Alpha Splinter.

Samus Aran encountered and killed a Dark Alpha Splinter in Aether's Great Temple. The Ing that possessed it had the Energy Transfer Module, so when you beat the Dark Alpha Splinter you get it as a reward.

It attacks by firing a purple fluid and then ramming Samus.

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