Kein is a Human, who has continued Dr. Gero's work. He had used to be a worker for Gero, until he had quit because of familly problems. Then, when he had heard Gero was killed he had stole some plans from Gero and had created his own android. His name was Android 30.2 and he was very powerful. Kein had then merged his DNA with Android 30.2 and he then became Android 30.3
Life As An AndroidEdit
Kein was very powerful, but he was also on the verge of losing his mind because he had so much power. He had then finally lost it. Once he had heard that Goku had never died, his programming kicked in and he went crazy since he designed 30.2 to follow Gero's Legacy. Kein had went on a killing spree and he was eventually being tracked by the Z-Fighters. He had easily defeated Krillin and Yamcha, but had trouble defeating the others. Ultimately, Goku, Vegeta, Trunks, Goten, Piccolo, and Tien had used their attacks to defeat Kein. They had also destroyed every of his leftover parts.