Roll is the sister of Mega Man, created by Dr. Light to do house shores like cleaning and cooking. She is not a battle robot, thus, most of her appearances are short and she usually causes trouble for her brother, falling victim of the EM wave in Super Adventure Rockman, to the Roboenza in Mega Man 10, and being kidnapped or shot in other media. She also runs from Terra in Mega Man V and complains in the Japanese version of Mega Man 7.
However, she is able to help Mega Man in Mega Man 10, and has appeared as a playable character in Mega Man: Battle & Chase, Mega Man Powered Up, Marvel vs. Capcom, and Tatsunoko vs. Capcom. In some games she uses a broom as a weapon, while in others she has a buster and can transform into a large combat robot.
Roll was on the 1990s TV show Battle & Chase as a driver named Miss Roll. After winning the 1997 championship without losing a single race, she presented a new song in front of everyone. Talent scouts were interested in the production, and Roll accepted, leaving her racing career behind and starting a singing career by forming the band ROLL.