I am Green Sigma The Hedgehog, the first Shadow after the prototype. I can use the Chaos abilities of Chaos Control, Chaos Blast, Chaos Spear & Chaos Shotgun without a single Chaos Emerald. I can also use Chaos Time Flux & Chaos Bomb, but i'd need at least 1 Chaos Emerald while wearing the Chaos Rings to do so when i'm not in any of my higher forms. I once tryed to destroy G.U.N., for killing Maria's parents, but that failed when Sonic, Silver & Shadow intervened with my plans and destroyed my dark half. I am now their ally but, no matter what, I don't show any mercy to anyone who gets in my way!