THORNAPPLE Members Profile and Facts THORNAPPLE (쏜애플) is a K-Rock band that currently consists of 4 members:  Hong Dongkyun, Sim Jaehyun, Yoon Sunghyun and Bang Joseph. They debuted on August 17th, 2010 under Happy Robot Records. THORNAPPLE  Fandom Name: – THORNAPPLE  Official Fan Colors: – THORNAPPLE  Official Accounts: Facebook: @Thornapple1224 Instagram : @thornapple_official Youtube: THORNAPPLE(쏜애플) THORNAPPLE Members Profile: Yoon Sunghyun Birth Name: Yoon Sunghyun (윤성현) … Continue reading THORNAPPLE Members Profile