James Dazz

"Huh. Hey, your ex-boyfriend oddly shares the same name as my grandpa..."

- Peri mentioning his grandfather John

John Dazz is the grandfather of Peri Dazz.

Computeropolis 2 (2007)
John Dazz was briefly mentioned by Peri in a scene of the film where Vinna introduces herself and tells him about how she broke up with her former ex-boyfriend named John (who shares the same name with Peri's grandfather) and how she met Peri.

Trivia

 * He and Vinna's former ex-boyfriend are the only two Computeropolis characters who share the same name with each other.
 * It is unknown about his wife, Peri's grandmother, who was never mentioned nor seen. It is very likely that she died prior to the events of the movie.
 * John Dazz was originally going to make an appearance in Computeropolis 3 but was cut during production for unknown reasons.