E-102 Gamma Gamma was built by Dr. Eggman to help destroy Sonic and help in the perfection of Chaos. Gamma was the top line of the E-100 series, but his greatness caused his fellow E-100 brothers to be remodeled or dismantled. Gamma saw his big brother, E-101 Beta, being remodeled in front of his eyes. After talking to Amy Rose and her birdy friend, and finding his heart, Gamma went out to free the animals in the E-100 robots. Gamma was destroyed after blowing up the new 'Beta'. The birds inside Gamma and Beta were parents to Amy's bird.