Rachel Kooper/Rooster Cockburn

Rachel Kooper paid her way through college in the Central Roller Derby League as one of the top rollers. When she was hard-up for money she committed a string of armed robberies and was eventually arrested. She paid her bond and quietly gave up her life of crime.

After college she went on to become an engineer for RandCorp, but the derby itch still needed to be scratched. She put on a costume and a mask and called herself Rooster Cock-Burn to fit in with the trends of vulgarity and brutality started by the aging Crashley Jawbreak. She became bitter rivals with the former Roller Girl and eventually grew to hate her intensely.

The urge to break the law came back too, and this time she did it in costume. She broke into her own lab at the time, which was working on new forms of propulsion. She stole two mini jets and a hefty portion of the fuel. She used these to make jet skates, which gave her an edge in the next race.