When Shannon Carter was a teenager, she lost both of her parents (and the use of her legs) in a car accident. She was hospitalized for months and finally adopted by her father’s cousin—Peggy Carter. She was quite depressed (understandably) and, while regaining the ability to walk, Peggy would regale her with stories about Captain America and his great heroism. Shannon was greatly inspired by these stories and resolved to live like her idol. After she could walk again, she began training in earnest to prepare for superhero life. She eventually got a job as curator at the Avengers mansion, which led to her getting recruited for the (badly written) superhero team A-Next. She quickly rose through its ranks and remains the team’s leader.
I really want to point out just how ridiculously bad-ass Shannon Carter is and how I think it’s ridiculous that she’s largely overlooked. Steve Rogers gets his powers from a souped up steroid shot.
powers. She just trained to be as bad-ass of a fighter as she is. Steve Rogers wishes he was as awesome as this chick.