Android 21 is another android that was created by Dr. Gero and a former scientific researcher for the Red Ribbon Army. She likes to eat sweets and has a strong compulsive desire/instinct to eat. She's also the mother of the human version of Android 16. She's also very intelligent and can act pretty well mannered given the circumstances of not giving into her hunger. However, once her that evil desire takes control she becomes more sadistic and do whatever it takes to feed herself and get stronger. There's also a particular transformation which she later manifests into that looks similar to a Majin. She's the main antagonist of Arc 2 in The Legend of Goken.