Patches

Patches was a villain from the Powerpuff Girls who befriended a shy boy named Mike, however due to being invisible whenever mike talked with him the other children believed he was simply talking to an imaginary friend. Patches began to cause trouble for Mike however when he began to perfom malicious deeds, making everyone believe that Mike was causing trouble. However after a while Patches revealed itself by openly trashing the classroom, realizing Mike was not the real enemy the girls tried to fight the still invisible Patches but were unable to combat a villain they could not see. However the girls finally managed to defeat Patches by creating an imaginary friend of their own to combat Patches - (who was revealed to actually be an evil jester-like being). The girl's imaginary friend proceeded to beat Patches up and banished him, ending his rampage.