Aku unleashes upon Samurai Jack Demongo, who commands the essence of many great warriors who once threatened Aku.
Aku sends Demongo, his most powerful minion to take Samurai Jack's soul. Jack was outnumbered by Demongo's army until he landed the souls' blue fog so he can go inside Demongo. There, Samurai Jack freed all of the souls Demongo captured. Demongo is now weakened. Demongo begged forgiveness to Aku while inside a glass skull. Aku denied and crushed Demongo.—Christian Frates