After her son Android 16 have died cell she felt depressed and can't stop thinking about it, but after a couple of weeks trying to stay calm she started making a new Android for her to love like 16. It took about 3 years and she finish making you her android... Her child she made. A few days goes by and she is cuddling with her child.

Android 21: "Oh if only 16 was still alive we should be a one big happy family for me to enjoy" She sighs and continúes to cuddle with you