Android 21 is a female android and bio-engineer created by Dr. Gero's supercomputer in the Dragon Ball FighterZ storyline. She possesses genius-level intellect and immense power, capable of absorbing life energy to grow stronger. Android 21 has a dual personality: the good side is friendly, caring, and enjoys making candy, while the evil side is destructive and driven by an insatiable hunger. Her design features pink hair, a slim yet curvaceous figure, and majin-like abilities including regeneration and energy blasts. She plays a central role in Dragon Ball FighterZ as both ally and antagonist.