Much like his mainstream counterpart, Rock Light was created to be Dr. Light's helper and surrogate son along with his sister Roll. Just as in canon, Dr. Wily reprogrammed Light's robots to rampage in the former's quest for world domination, forcing Rock to become Mega Man to stop him. However, there are several notable divergences from canon after, such as the threat of Emerald Spears (an anti-robot terrorist group) and his brief bout of megalomania following his acquisition of his brothers' Special Weapons. Nevertheless, he remains the benevolent super fighting robot he is in the main canon.