Barbara is one of the villains from Battle Circuit. She is a member of the Delete Gang, being the boss of the Biker Gals and Johnny's girlfriend. After Johnny is beaten by the five bounty hunters, she gets angry and decides to chase them to take revenge. They try to avoid her, as they were already chasing Dr. Saturn, who stole the Shiva System disk which was under Johnny's possession. Barbara corners them on the beach, forcing them to fight her. She is defeated and left at the beach. She appears again in the Shiva System ruins, protecting the outside with two partners, but is defeated again.