Jack

Jack – Peter's best friend. He is frequently annoyed by his younger sister, Susie, who takes advantage of his tendency to forget the password. He gets along well with everyone in the group, especially Peter, but is also the only member who will willingly stand up to Peter when he feels that he is behaving unreasonably, to the extent that he once walked out on the group after an argument with him (although they reconciled at the end). Jack lives very near to Peter and Janet. He thinks Janet is lot better than the other girls and wishes Susie was like Janet.