Clinton is one of Tommy's bullies and the jock at school. He always blames Tommy for anything bad that happens just like the other humans. Clinton enjoys winning and running in races and sometimes he thinks everything he interacts or competes with Tommy in is a race (even though it is not). His hobby is to annoy Tommy. He is unaware that Tommy's friends are aliens just like the other humans he just calls them "his rainbow of losers".
In one episode, Tommy and Dinko caused Clinton to become an evil dictator in a society ruled by sports after messing with the time and space.