'Superstar K4' contestant Roy Kim revealed why he uses an English name.

At the press conference for the 'Top 4' contestants on the Mnet program, Roy Kim explained, "My legal name is not 'Roy Kim'. I wrote�Kim Sang Woo on my application, but the producers suggested that I use an English name."

He continued, "Before appearing on 'Superstar K4', I posted videos to YouTube under the name 'Roy Kim'. The producers knew this and asked me to use that name instead."

Though Roy Kim was previously enrolled as a student at Georgetown University, he was born and raised in South Korea. However, his name has lead many to believe otherwise:�"Since using an English name, there are a lot of people who mistake me for an American citizen, but that's not true at all. I'm a Korean citizen, and I even have to serve in the military."

In related news, the next episode featuring the 'Top 4' will air live on the 9th at 11PM KST.