Mekenobite

Mekenobites are mechanoids found in the Sanctuary Fortress area of Metroid Prime 2: Echoes. Mekenobites use magnetism to hang from ceilings. They can fire projectiles using a magnetic accelerator at its target. They are invulnerable to most forms of attack. The only way to kill them is to target both its legs at the same time with the Seeker Missile. The two Missiles will detach both its legs from the ceiling, causing it to drop and self-destruct.