The black hole grenade, used by the Dark Elves in Thor: The Dark World, is one of the MCU's most underrated weapons. Capable of creating a miniature black hole that consumes everything in its path, its immense destructive power is overshadowed by the Dark Elves' underwhelming presence in the MCU. Despite its potential, the weapon doesn't receive the attention it deserves, though its impact could have been devastating in the right hands.