B etween giving Cell a Senzu Bean and letting Dr. Gero build Androids 16, 17, 18 & 19 over the course of three years, Goku makes a lot of bad decisions in Dragon Ball Z's Cell Sag ...

Androids 17 and 18 are cyborgs, not fully mechanical androids like 16. Android 16 is fully mechanical, created by Dr Gero. Android ... but also because he killed his wife and son.