50 Best 'Mad Men' Characters

From one-off cameos to Sterling-Cooper's core players, we're ranking the show's most memorable characters

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Katherine Olson
Ron Jaffe/AMC40/50

40. Katherine Olson

Showcase Episode: "The Suitcase"
Peggy's mom is a tough old Catholic lady from Bay Ridge, where she probably goes to church with the young Tony Manero. She adores her daughter, calling her "Peaches," but she's usually yelling at her, which might be why we haven't seen her around the Peggysphere in a few years.

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