Topic summary
Android 20
Extracted from the Wikipedia article Red Ribbon Army.
Doctor Gero
Doctor Gero (ドクター・ゲロ, Dokutā Gero) does not appear in the original Red Ribbon Army story arc, and is retroactively linked to the group when his motivation of revenge against Goku for the organization's downfall is revealed in the Android Saga arc. After creating a more advanced series of Red Ribbon Androids, he eventually implants his own brain into a replica of his body. He calls himself Android 20 (人造人間20号, Jinzōningen Ni Jū Gō; lit. 'Artificial Human #20'). He is initially encountered by Yamcha, who is nearly killed when Gero impales his chest with a hand and absorbs Yamcha's chi using a small device on his hand. Gero later flees back to his laboratory and releases Androids 17 and 18 to fend off Goku's associates, but 17 turns on his creator and murders him following a brief altercation.