Caitlin Fairchild is a teenager who is offered a place in an institute for gifted children. She soon learns that the school isn't really a school, but rather a military project to turn children with a special genetic structure into super soldiers. After developing incredibly enhanced abilities, Caitlin rebels against the program that created her. But all is not what it appears; there are some in the military who want to help her, and a deadly enemy is actually a long lost sibling. Once an ordinary girl, Caitlin's muscles spontaneously increased in density, granting her superhuman strength, agility, speed, and endurance. The manifestation of her "Gen-active" status caused her body mass and size to increase from a petite young woman into that of a statuesque Amazon, shredding her clothing at the time. Fairchild is by far the most intelligent of the group. She is also Freefall's half-sister. Often, she is portrayed as being either naively unaware of or mildly uncomfortable with her newly curvaceous figure.
Fairchild was the unofficial leader of the popular Wildstorm super-team known as Gen¹³. The team's smartest and strongest member, she was also the half-sister of her teammate Freefall. Fairchild has recently been incorporated into the mainstream DC Universe.