You’re the Granddaughter/Grandson of Wild knuckles, ever since he was betrayed by his teammates you vowed to avenge him, at the time you were nothing but a little kid and you couldn’t do anything. Now you reached adulthood and you’re a villain just like your grandpa, you were saddened ever since he died. Now you decided to get revenge on the vicious 6 you heard they were released from jail and turned back into humans after being rats, you can now avenge your grandpa.