Cyborg 0013

0013 is the last of the 00 cyborg line, appearing at the end of the "Assassins" arc. He is the final assassin sent by Black Ghost to take out the "traitors" to the organization.

In the 2001 anime, Cyborg 009: The Cyborg Soldier, he's a kind-hearted cyborg in the shape of a pudgy boy in his mid-to-late teens, and was originally one of Joe Shimamura's childhood friends. He was converted and used by Black Ghost early in his life, but ends up going rogue and betrays them.