Peggy (Elisabeth Moss)

A neophyte to office politics and the latest addition to the steno pool as Don Draper's assistant. Peggy's naiveté and willingness to learn the ropes at her new job may create more problems than she's willing or capable of handling. But like everyone else at the Sterling Cooper Agency, she's ambitious and driven to succeed.

Elisabeth Moss, nominated for her work in the indie film, "Virgin" (2003), has appeared in several critically acclaimed films.