A list of actors who were on The Walking Dead for only one episode, but who made a big impression.
Noah Emmerich as Dr. Edwin Jenner, TS-19 (106)
Christopher Berry as Savior Biker Bud, No Way Out (609)
Alicia Witt as Paula, The Same Boat (613)
Robin Lord Taylor and Brina Palencia as Sam and Ana, Indifference (404)