Black Knight (Zyuranger)

The Black Knight (18 (flashback)): Burai and Geki's true father. A warrior who rebelled against the Yamato King, he was forced to give Geki up for adoption as punishment for his insubordination against the King. The Black Knight used this as an opportunity to challenge the King in order to reclaim Geki, only to be defeated. Before dying, he told Burai to avenge his death.