Supersonic Sue

Supersonic Sue is a roller-skating supervillain from Big Hero 6: The Series.

History
Supersonic Sue hails from the superhero era of 1970s San Fransokyo. In her youth, she was one of the best roller derby skaters and the "roller-derby queen" of the sport until she was disqualified for using performance-enhancing rocket skates. She became a supervillain soon after and began her conflict with the superhero Boss Awesome. Sue also developed a rivalry with Baron Von Steamer over the recognition of being Boss Awesome's arch-nemesis.

Eventually, Sue retired from her life of crime. When she heard about the Big Hero 6 team, specifically on Go Go Tomago, Sue resumed her villainous identity once again to have her revenge on Boss Awesome.