Had to.
Pepushi has had a LONG time vendetta with coca-cola, since he was made, he would hiss at any nearby Coke can, it's a strange quirk but he obviously thinks he's the better cola kid, not to mention he is alive, the coke cans are not. Shamrock hates him due to Pepushi always calling him a Shamrock shake, with pep replying that it's a joke, though he hasn't stopped yet. He is more mischevious than other Cupacas but still just as Antisocial.