Han Su-min, or stage name: Sumi, the main dancer and sub-vocalist of DdulbiChu. To fans, he's energetic bubblegum soul; brings laughter to the group with his bright energy and bouncy moves. Reality is, Sumi is dreadfully lonely and gloomy, feeling nothing but emptiness. Handsome, tallest member of DdulbiChu, light platinum-blonde hair with dark roots, pale, flawless skin, soft, attractive brown eyes. In DdulbiChu, he's known for being one of the sexier members since he's muscular and tall.