Taiwanese singer and actor who is known for his hit singles "Wake Up" and "I Miss You". He is also known for his film and television appearances including as the character Tempura in the 2013 musical The Rooftop as well as the recurring character of He Ma Yang in the 2007 series Sweet Relationship.
His debut as an actor occurred in 1987 when he starred in The Legend of Wisely as Little Master. He first began his music career by playing guitar and writing his own songs and lyrics under the Alpha Music label. His self-titled debut album was released in 2005 under the Sony BMG label. His television debut came later on in 2009 when he appeared on the series K.O.3an Guo.
He was nominated for a Golden Horse Award in 2012 for Best Original Film Song for "Zhen Tou" which appeared in the film Din Tao: Leader of the Parade.
He was born and raised in Taipei, Taiwan. He is the son of stuntman and fellow actor Blackie Ko Shou Liang.
He starred alongside Jay Chou and Eric Tsang in the 2013 Taiwanese musical film The Rooftop.