Phillip Rupert "Phil" Diffy (born 2107) is a 15-year-old boy who got trapped in the year 2004. He went to a present-day school called H.G. Wells Junior and Senior High School and befriended a girl named Keely Teslow who later became his girlfriend. His family includes his sister Pim, his mother Barbara, his father Lloyd, and his great-great grandfather Kyle Speckle. He returns to his time by the end of the series. He is portrayed by Ricky Ullman.