Peggy Carter was created by Stan Lee and Jack Kirby. She first appeared in Tales of Suspense #75 (March 1966).
Although she possesses no superpowers, Peggy Carter is superb martial artist, excels at firearms, and is a highly trained spy and tactician. Peggy was a member of the French Resistance in WWII, later joining SHIELD and the Avengers.
FTF: bobbybear1966