General Rilldo

A machine mutant created by Dr. Myu, who appears to be the leader of Myu's Machine Mutant armies. When Goku, Pan, and Trunks arrive on the planet M2 at the befrient of Gill, Rilldo sends the Sigma Force to capture them. The Sigma Force are defeated by Goku and Trunks, leaving Rilldo to take care of the two by himself. Using his special beam that turns things into metal, Rilld captures Trunks, but is still defeated by Goku. After combining with the remaining scraps of the Mega Cannon Sigma, Rilldo powers up to his Meta Rilld form, forcing Goku to transform into a Super Saiyan to fight him properly.

As Goku begins to gain the upper hand, Rilldo transforms again to allow him to fuse with any metal on the planet and make him nearly invincible. While the trio try to leave the planet M2, Rilld stops them by grabbing hold of the ship. Trunks tries to reason with him, saying he was nothing but a pawn in Dr. Myuu's games, just an inferior being that would be shut down once his plans with other creation Baby are complete. Rilld refuses to listen. However, the three fire a combined Kamehameha-like attack, that easily kills the un-transformed Rilld. It is later revealed that Rilld was in fact under control of Baby. General Rilldo, along with the other villians, escaped from Hell, thanks to Myuu and Dr. Gero.

He is first seen chasing Pan and Mr. Satan, only for them to be saved by Gohan. The two end up fighting, with Rilldo easily gaining the upper hand. He is even successful in encasing Gohan's arm and leg in metal. He nearly kills Gohan, but is killed by a sneak attack from Uubu. © http://dragonball.wikia.com/