For those of you who do not know, Family Guy's Chris Griffin has an Evil Monkey living in his closet. The Family Guy Evil Monkey wasn't always evil though. He was once an easy going working monkey, until one day he caught his wife in bed with another monkey. From that day on the Family Guy Evil Monkey became angry and stayed in Chris' room.
The trademark look of the Family Guy Evil Monkey is the angry look on his face and pointing at you. He only comes out when Chris brings up that he's scared to go to his room because of the Evil Monkey living in there.