What The Walking Dead Cast Looked Like As Kids

Then: Steven Yeun was born in Seoul, South Korea, and his family moved to North America when he was a child. He studied psychology in college, and his parents hoped he'd pursue a career in medicine or law. He had an interest in acting, though, and moved to Chicago to pursue his interest in improv, landing a gig with Second City before relocating to Los Angeles. Prior to Dead, he'd had a number of roles in shows like The Big Bang Theory and Law & Order: LA, but his biggest break happened when he landed the part of Glenn Rhee.

Now: Yeun has juggled several projects since becoming a staple of the small screen, including a few cameo TV roles in American Dad! and Drunk History and a regular role in Voltron: Legendary Defender. He's also made moves onto the big screen in films like I Origins and Joon-ho Bong's Okja.