E-102 "Chaos Gamma" (Ｅ－１０２ “カオスガンマ” E - 102 “Kaosu Ganma”?, lit. "E-102 "Chaos Gamma"") is a character that appears in Sonic Battle. He is a robot created by Dr. Eggman and served as the doctor's principal robotic enforcer during his operations to control Emerl. Chaos Gamma bears a strong resemblance to the original E-102 Gamma to the point where many has mistaken him for the same robot, though he is expressly not only his predecessor, but an upgraded version of him. During his service of Eggman, Chaos Gamma made numerous attempts to capture Emerl for his master.