His first lead role was in the cult thriller Anacondas: The Hunt for the Blood Orchid, as Tran.

Yune, a Korean American, was born and raised in Washington, D.C., the son of Yun Taeho and Park Wonhui.

Yune studied business, literature, and philosophy before he switched to a major in theater at Columbia University School of the Arts in New York after winning the role of Romeo for a presentation of Romeo and Juliette.

Yune got his first lead role in a studio film as Tran, one of the guides in Anacondas: The Hunt for the Blood Orchid.

He has also appeared in Forbidden Warrior, and Memoirs of a Geisha, as well as in the short films Miracle Mile (which received several awards), and Hold Up.