android 21 is created by gero and killed by gohan
- Dr. Gero (Creator)
- Cell Juniors (Offspring)[1]
- Android 17 (Component)
- Android 18 (Component)
- Goku (Genetic material)
- Gohan (Genetic material)
- Vegeta (Genetic material)
- Piccolo (Genetic material)
- Tien (Genetic material)
- Chiaotzu (Genetic material)
- Krillin (Genetic material)
- Yamcha (Genetic material)
- Frieza (Genetic material)
- King Cold (Genetic material)
- Nappa (Genetic material)
- Raditz (Genetic material
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![[1]](http://dragonball.wikia.com/wiki/File:Dbz-cell-06.jpg){kind=link}