His name is Suh Kang Yoon and he attends Credible School.  Currently, he is in a band named Napoleon Dynamite. Here are a few pictures of him & heechul, if you want to compare.

Full Credits to:

Source: Naver + soyboy01 @shenyuepop forum
credit for shenyuepop.com :Louise

If you want to listen to Napoleon Dynamite's song "Blah, Blah, Blah Go!" Go to this link: http://shenyuepop.com/2008/02/04/hee-chuls-look-alike-in-a-real-band/

                                                 Thanks For Reading & Only 13!