Booby is a chimpanzee referred to as "Perman 2". Earlier in the manga he lived in a zoo and had to sneak out at night to work (although his mother caught him once and gave him a spanking); later, the authors simply announced that they would retcon his character, making him a pet chimp who lived with an old couple, so that he could work more easily as a superhero. The reason why he is chosen as one of the Permans, is because, according to Birdman, there should be no discrimination between Earth humans and animals. He is highly intelligent, but because he cannot speak human language, he often uses objects and gestures to get his point across. He acts like a human even though he's a chimpanzee. Booby helps his colleagues with human affairs, although in chapters where he's the main character he works with animals who he can speak to. Booby is voiced by Hiroshi Ōtake during both anime television series.[2][3]
