E-103 Delta

E-103 Delta is the 3rd in the E-Series robots.His first apperance is in Sonic Adventure were he plays a minor role in Gamma's story as a boss.All the E-Series robots look the same appart from their colour.

E-101 Beta  Black

E-102 Gamma Red

E-103 Delta  Purple

E-104 Epsilon  Yellow-Orange

E-105 Zelta  Light Purple

Delta is destroyed and the bird trapped inside him is realesed. Delta also apperers in Sonic X.