Aku

"At last... After all these years, I am finally free once again."

- Aku after being awaken by Jomei

Aku is a character who first appears in chapter 1 of The Futures Shadow. He is introduced in a flashback of being destroyed by Jack. Aku is the father to Akuma, and the co-ruler of earth. He originates from the classic TV show, Samurai jack.