Regarded as a first generation webcomic artist, Kang had no formal teaching in either writing or drawing comics. His interest stemmed from painting wall posters for the student body at Sangji University, turning them into eye-catching comics in order to attract attention. As a student, he earned the nickname Kang Full by often wearing green clothes, 'full'(풀) meaning 'grass'(풀) in Korean.
Kang decided to become a comic artist prior to his graduation, but initially received little interest from publishers. In April 2002, he launched a personal website and began posting his work online, to great success. By 2008, his comics had reached in excess of 300 million page views. Kang has also drawn attention from the Korean film industry, and several films, including APT, BA:BO, Hello, Schoolgirl, Pained, The Neighbor, and 26 Years, have been based on his work. He has also been hired as the screenwriter for a prequel to the 2006 film The Host.
He also draw several books only for kids. His picture book "Hi, Friend" has been nominated as a 14th popular book for a very short time.
His comic "Every Moment of Your Life", which parodies president Lee Myung-bak, has been criticized by Korean conservatives as leftist propaganda, not entertainment. In response, Kang Full has said, "I can't stand bastard act."