Steven Yeun

Steven Yeun is a Korean-born American actor, who currently stars in the role of Glenn in the AMC television series "The Walking Dead." Other than "The Walking Dead," Yeun had a cameo in the critically acclaimed American sitcom "The Big Bang Theory" as Sheldon's former roommate Sebastian in 2010, an independent film and a couple of shorts. He has also completed voice work for the Crysis video game series. [+]