Diz is an alien from outer space who worked for Project Vizion, a judgemental initiative established to determine which planets were worth keeping and which to destroy. However, he grew impatient with Viz, the leader of Vizion, and craved to destroy every planet. Eventually, he betrayed Viz in order to help Phil Eggtree and his friends, but later betrays them to achieve his goal of destroying Earth himself. Later on, his true intentions are fully revealed.