glux2  Comic book pitch: League of Animal-themed Heroes….

Cat Nap, a hero with the power to make villians sleepy as they fight until they are knocked down entirely

Honestly, this concept feels a bit more like a cat burgular-type villian who uses knock out gas to preform robberies.

Or a goofy, a person possessed by a ancient cat god who only takes over when they fall asleep, and they lose there power if they wake up.