The Hand is a disembodied hand (similar to Thing from "The Addams Family") with tattooed adornments that is one of the antagonists of The Amazing World of Gumball episode, "The Lesson." He is seen upset at Gumball and Darwin's presence in the cafeteria. He is also one of the bad kids at Elmore Junior High.
He is very mean and bad. The skull tattoo is the hand's face. He talked when Gumball and Darwin first got to detention. Like the Rotten Cupcake, he can hear thoughts. He has a "HATE" tattoo on each of his four fingers, suggesting that is how he feels about everybody.