First debuting in a guidebook for Dragon Ball Online as a baby, he appears as a minor antagonist as an adult in Dragon Ball Xenoverse and a major antagonist in Dragon Ball Heroes. He is the son of Towa and Mira, and is the nephew of Dabura. In Xenoverse, Dabura regards him as an heir to the Demon Realm's throne, but Fu prefers conducting his science experiments instead. In Dragon Ball Heroes, he is often seen being the caretaker of Dogidogi.
His initial design as a baby was done by Toriyama Akira. However, the original creator of his adult designs is unknown.
In Dragon Ball Heroes, depending upon whether you are reading the manga, watching the anime, or playing the game, Fu either willingly or unwillingly gains Mechikabura's power, turning him into a Dark King. Later in the same arc, he is reverted into the form of a child by Tokitoki.
