King Piccolo wears this kanji, just like Piccolo Jr. as a young child and Gohan when he was training under Piccolo. In following the naming scheme, the word "majin" borrows from this symbol.

Future Gohan first appeared in the Dragon Ball Z special, The History of Trunks. In it, he and Trunks serve as humanity’s last line of defense after Android 17 and Android 18 massacred the rest ...