Arthur is the secondary antagonist of the Fat Albert movie. He is Reggie's friend who does not know how to handshake and when Reggie made a run for it he did the same thing.
He is the minion of Reggie that does bad things with him.
He and Reggie laugh at Fat Albert for having to drink at a different water fountain.
He then Arthur saw that Fat Albert was a good singer and then he tried with Reggie to tell everyone that Fat Albert's a cartoon and then when he saw that Fat Albert grabbed Reggie by the shirt and consumed him.