Desbrachian



Unidentified Life Form 61 is a large, insectoid creature that appears after the final boss battle throughout the Bottle Ship in Metroid: Other M. ULF 61 makes its first appearance in the endgame, controlled telepathically by MB, and Samus must contend with at least four of them at once alongside Madeline Bergman and a cohort of Marines from the Galactic Federation.

Throughout the game, ULF 61 is seen to appear throughout the Bottle Ship in a hemispherical, cocoon-like form, and the player is unaware as to their true nature. The player can only cause ULF 61 to "awaken" from its cocoon by detonating a Power Bomb, which are only acquired in the post-credits sequence.

ULF 61 is implied to be a sort of "supersoldier" organism for MB, and it is far more difficult than any other creature encountered in the game. Many of its attacks can drain an entire energy tank, even with the Gravity Suit. The organism also displays an ability to retreat into a green-tinted version of its cocoon and regenerate when low on health, and is invulnerable while doing so. Therefore, after it has been weakened, ULF 61 must be prevented from regenerating with a technique such as a Lethal Strike or an Overblast.