Arthur is Reggie's friend who Don't know how to handshake and when Reggie made a run for it Arthur did the same thing
he is the minion of Reggie that does bad things with him
he and Reggie were laughing at fat albert
he then saw that fat albert was singing good and then he saw when he can sing good and then he was trying with Reggie to tell everyone that fat albert's a cartoon and then when he sees that fat albert grabs Reggie by the shirt he runs away with him