C. Nightmare

Chaos Nightmare is a variation of Chaos Control used primarily by Shadow in Sonic Battle It serves as Shadow's heavy attack in the game. To perform it Shadow grinds his fists, distorting space and creating small spheres of Chaos Energy in each hand. Shadow often uses this attack at the end of a punch-kick combo. It is among the most powerful of heavy attacks in Sonic Battle, and is also quite fast. Emerl can also learn this attack through fights with Shadow, after obtaining the skill and can also use it at the end of the Shadow Combo.