Her father did not want her following his footsteps, and he struck a bargain with her: she would graduate from college before considering a career in crime fighting. She did, and the same night of her graduation she donned a costume and became Thunder.
Shortly after Thunder had started her solo career, she was approached by Red Arrow, who offered her a spot on the new team of Outsiders. Reasoning that she could best learn the superhero trade with a team, she agreed to this offer and became an Outsider.
Although she got along with most of her teammates, she seemed to constantly come into conflict with Grace, a tough promiscuous bouncer. They were, however, quite effective as a team, and the two slowly came to a grudging respect between them.
Eventually her father appeared at the Outsiders headquarters, demanding her resignation from the team. Naturally, she refused and when the danger of Sabbac arose again, her father even decided to accompany the Outsiders. During that adventure, the two came to respect each other’s abilities, neither having seen the other in action before, and Thunder was allowed to remain an Outsider.
The extent of her invulnerability was tested during a fight with the re-formed Fearsome Five. The matter transmuter Shimmer converted the air in her lungs to water, which caused an inflammation so great that she suffered pulmonary edema and acute respiratory distress syndrome, which nearly killed her. She recovered and continued to serve with the Outsiders.
