Scarebat

Scarebat is Meta Knight’s archenemy, who has the ability to use claws to scratch and use fear gas as a weapon.

Origin
Lucas Crane, who was a kid, was being lectured poorly, and bullied. Because of this, he was driven mad and demanded revenge. He dons a scarecrow mask, and uses fear gas, and claws as his weapon to scare or kill those who treated him badly.