Android 16

Android 16 (人造人間１６号, Jinzōningen Jū Roku-Gō) is Dr. Gero's sixteenth Android creation, initially designed to serve Gero's vendetta against Goku. He is a playable character in Dragon Ball FighterZ.

Background
Originally created by Dr. Gero for the express purpose of killing Goku, Android 16 would go on to become his ally instead during Cell's rampage. Developing a fondness for nature and animals, he would fight to protect the birds and the forests from Cell. He was destroyed by Cell, playing a part in helping Gohan awaken to the state of Super Saiyan 2 before Cell snuffed him out. Now, however, he has reappeared and is helping Android 21... But why?