Supersonic Sue (character)

Supersonic Sue is an elderly roller-skating villain who appears in Big Hero 6: The Series.

Background
In her youth, Supersonic Sue was once a famous roller-derby queen until she was kicked out due to using enhanced rocket skates in her performances. Afterwards, she turned to a life of crime. She also had a bitter rivalry with Baron Von Steamer, fighting over being Boss Awesome's number one enemy.