Born in Seoul, South Korea, James moved with his family to New York City at the age of 10. He graduated from Bronx High School of Science and continued his education at Boston University and New England Institute of the Arts where he studied communications & broadcasting.

After trying out improv and inspired by his newly discovered passion for performing, James sold his car and purchased a one-way ticket to Los Angeles, where he began his training in music, dance, and acting.

James has since guest-starred on hit TV shows such as "CSI", "Las Vegas", "The West Wing", "Heist", "Threat Matrix", "JAG", and "All About the Andersons".

He currently stars as "Ando" on NBC's critically acclaimed drama "Heroes".

In addition, James will also star in: Termination Shock (2009), White on Rice (2010), and How to make Love to a Woman (2010).

A student of improvisation & sketch comedy at The Groundlings, UCB and I.O.West, James also enjoys playing ultimate frisbee, basketball, and the piano, as well as reading, and watching documentaries.

James currently resides in Los Angeles.