Fu is a demon, and the son of the two main villains in the game, the artificial being Mira and the evil scientist Towa. His body hides a lot of mysteries, and he was greatly affected by Mira after meeting him. Supplemental material for Dragon Ball Online states that he will have a big influence on the world when he grows up.
Fu has inherited tremendous strength from his father.
- His name is likely based on the word "Future", continuing the time-based theme used for his father's name.