Lloyd Diffy (born 2074) is Phil and Pim's goofy dad, who was working on repairing the time machine. He was an engineer in 2121, and loves "older music". He was paranoid about the government (and Vice Principal Hackett) figuring out he and his family are from the future. During the Diffys' stay, Lloyd and Curtis got jobs at the Mantis hardware store. Lloyd is two years older than Barb. His name may be a reference to Christopher Lloyd, who starred in Back to the Future.