Phil Diffy (born 2107) is the main character in the series. He was a 9th (Season 1) / 10th (Season 2) grader at H.G. Wells Junior/Senior High School. He seemed to be the most "in tune" with how things work in this century. Phil frequently had to make up excuses to hide the fact that he was from the future. He's the best friend of Keely Teslow and eventually her boyfriend. Phil is two years older than Pim.