John is a blue Mousehead and one of the main characters. He is a courageous and smart Mousehead and spends most of his time watching TV at home. He likes coffee because coffee is one of his favourite drinks, and fixing when the other MouseHeadz' things are broken. He hates the colour pink because pink is his least favourite colour and it's too girly for him. He also hates taxes and being angry to good people. He hates Coral so much because she tells him to be his girlfriend.