His Stage Name is Canopus Geonil | Geonil | ゴニル (건일 or 建日). He is a member of SUPERNOVA Korean band. His real name is Park Geonil (박건일, 朴建日). He was born in November 5, 1987 .. His Position in his band is Main Rapper and Lead Dancer.

On September 15, 2009, Choshinsung's (SUPERNOVA) he, Gwangsu (ONE OF THE MEMBER) and JiHyuk (ONE OF THE MEMBER) got together with T-ara's SoYeon, Hyomin, Eunjung and Jiyeon to release a digital single called Time To Love.