Diz is an alien making his first appearance in RS3, one of the only characters in RS4, a deuteragonist in RS5 and RT, and the secondary antagonist in RT2. Diz makes a cameo appearance in RS3, on a poster saying "SWEEET". He then appears behind Phil in RS4, convincing Mr. Munch to kill him. RS5 is where Diz becomes a major character. His third appearance in all the games is in the cutscene where he explains the concept of Vizion to Phil, reappearing after beating the game to return the kids to their homes and then getting taken in by Zone 5.1.