Gamma E-102 is a robotic character introduced in the video game Sonic Adventure, which has also appeared in related anime adaptations. Created by Dr. Eggman as part of the E-100 series, Gamma initially serves as an antagonist. However, over the course of the story, he develops self-awareness and rebels against his creator to free his fellow robots. Gamma's journey is notable for its themes of self-discovery and sacrifice, making him a memorable and emotionally impactful character in the Sonic series.