Dr. Gero

Dr. Gero also known as Android 20 was a leading scientist in the Red Ribbon Army before it was defeated by Goku. After the army's defeat Gero spent the rest of his life building androids strong enough to exact revenge on Goku. This process also made himself convert to an android. After he is killed and all his creations are defeated he meets Dr. Myuu in hell and helps create Super 17. Although he is killed again when Dr. Myuu betrays him.
Although Goku mentions defeating him, he is never actually shown earlier in the series.
==Creations and Co-Creations==
*Android 8- Co-Creation
*Android 13- Creation
*Android 14- Creation
*Android 15- Creation
*Android 16- Creation
*Android 17- Creation
*Future Android 17- Alternate Timeline Creation
*Android 18- Creation
*Future Android 18- Alternate Timeline Creation
*Android 19- Creation
*Cell- Creation
*Cell Jr.- Indirect Creation
*Hell Fighter 17- Co-Creation
Category:Characters
Category:Evil
Category:Villains
Category:Red Ribbon Army
Category:Doctors
Category:Males
Category:Dragon Ball Z Characters
Category:Dragon Ball GT Characters
Category:Characters who can Fly
Category:Androids
Category:Cyborgs
Category:Humans
Category:Charcters Who Cannot Die of Natural Causes
Category:Deceased
Category:Characters who absorb energy
Category:Dragon Ball Z
Category:Dragon Ball GT