Penny is an antlered peanut in Miss Simian's class. She is an upbeat girl who likes to cheerlead. She is Gumball's girlfriend. She, Gumball, and Darwin are expected to join IG-88 and his pals in the IG-88's Adventures Series. Her first appearance will be in IG-88's Adventures of Scott Pilgrim Vs. The World, the first episode of the IG-88's Adventures Series.