Ross Marquand’s television career took off with a standout portrayal of Paul Newman on AMC’s Mad Men. His breakout role came in 2015 on The Walking Dead, where he played Aaron across seven seasons until 2022. His television credits also include The Mindy Project, The Last Tycoon, and Brockmire. An accomplished voice actor, Marquand lent his talents to animated series like Family Guy, Robot Chicken, American Dad!, and Invincible, showcasing his knack for impersonations.
In film, Marquand joined the Marvel Cinematic Universe, portraying Red Skull in Avengers: Infinity War (2018) and Avengers: Endgame (2019), and voicing Ultron in What If…? and other MCU projects. His most celebrated voice role is Professor Charles Xavier in X-Men ’97 (2024), where he also voiced Doctor Doom and Apocalypse, succeeding Cedric Smith. Inspired by X-Men: The Animated Series as a child, Marquand’s work on X-Men ’97 fulfills a lifelong dream, cementing his legacy in both live-action and animation.