User blog comment:Bionicleboy3000/Metal Sonic: The most overpowered robot in fictional existence?/@comment-3437898-20130107153258/@comment-477304-20130107164305

Cell wasn't an alien, he was created by a human scientist. Despite, being referred to as an adroid Cell was clearly not a machine, but a gentically engineered clone of numerous DB character. So it comes down to oyur own opinion as to whether or not Cell could be considered a robot.

P.S. Cell was defeated by Gohan, Goku's son, with a little assistance from Vegeta.