Torn by inner conflict for his past deeds, Jago embraces the Tiger Spirit only to discover it is something much darker. Corrupted by the evil of Gargos, Jago is transformed into Shadow Jago, a dark reflection of the once noble warrior. Driven to conflict, every defeated opponent feeds energy directly to Gargos, drawing him closer to this plane of reality and the eventual destruction of mankind. As Shadow Jago, Jago's powers were boosted by Gargos' evil influence. All of his energy attacks became purple in color, and he also gained the ability to teleport in a flash of darkness.

Omen's goal was initially to possess and corrupt the soul of Jago and transform him into a mindless follower of Gargos. However, he failed to do this and was forced to retreat. It is currently unknown how long he had been dwelling within and how long Jago had been struggling against his influence. Now freed, the Herald of Gargos has drawn enough power through his battles as Shadow Jago to manifest physically on the mortal plane. He is corruption, fear, and rage given form. He is the right hand of his master’s will. He is the sign of the darkness to come. He is shadow energy incarnate. He is Omen! Omen can control and manipulate shadow energy, which is mainly provided to him by Gargos. He has an unpredictable and frantic fighting style with awkward kicks and swipes due to his unfamiliarity with having a corporeal form, though he makes up for this with his ability to fly using his wings and attack with the confusing Rashakuken fireballs.