No recent wiki edits to this page.
Android 17 was created by Dr. Gero as a weapon of the Red Ribbon Army. His main purpose: Kill Goku and complete Dr. Gero's revenge. Along with his counterpart, Android 18, they were originally humans. When Gero, now an android himself, was taken by surprise by Vegeta's Super Saiyan transformation, he woke 17 early.
Once revived, 17 quickly killed Gero and with his sister woke the experimental Android 16. Together they all sought Goku to complete their mission. On their way, 17 tried to get Piccolo to reveal where Goku was, as since he was in bed with the heart virus, never appeared. 17 fought with Piccolo, who was confident now that he merged with Kami and become a Super Namekian, before Cell appeared, and absorbed 17 so he could reach his Perfect Form. After absorbing 17, Cell gained a tremendous spike in power, and gained the strength to defeat 16.
After Cell's defeat, the Dragonballs were used to resurrect all those that Cell had killed, including 17. He was later seen leading a normal life and donating his energy to help Goku defeat Majin Buu.
In an alternate future, 17 and 18 easily killed all of the Z-Fighters, leaving only Gohan and Trunks. This version was far more evil and ruthless. Gohan was killed in battle and Trunks came back in time to warn those from the past of the androids awakening. Trunks helped in the past and returned to the future far more powerful, easily killing both androids.