I would suspect that zero was raised helter-skelter by a promiscuous mother and fuzzy headed grandparents.....he lived here, there, anywhere, and IIRC, a funny "friendship" was forced on him with some older black perverted man in Hawaii.....
we don't know what happened to little barry but probably none of it very good....
he has not bonded with his mother, nor his grandparents, and probably not Michelle nor his children.....