His television acting credits include a recurring guest star role on the television series "Smallville" as Arthur Curry, a.k.a. Aquaman, a small role as an army officer in the 2006 Hallmark Channel movie "Though None Go with Me" alongside Cheryl Ladd, and the role of Lucian Manet in the 2009 Lifetime original film "Nora Roberts' Midnight Bayou". His role in Smallville marked the first time that an actor portrayed Aquaman in an officially licensed live-action production. His "Smallville" co-star, Justin Hartley, has since portrayed Aquaman in an unaired pilot of the same name. Ritchson reprised his role as Aquaman in a voice over role for the animated film: ', and the final season of "Smallville". In 2009, he appeared on a third-season episode of Starz's "Head Case" in which he played a male stripper. Ritchson also made an appearance on ', in which he played a dead victim in episode 19 of season 8. In 2011, he appeared in an episode of season 3 of "90210" as a love interest for main character Teddy Montgomery (Trevor Donovan).