RGP (), formerly known as Skull & Haha (), is a South Korean duo formed by Quan Entertainment in Seoul, South Korea. They debuted on July 30, 2012, with Ya Man!!. Discography Album Extended plays Singles Collaborations Soundtrack Appearances Filmography Television Appearances Concerts and shows Concert participation References External links Official Website Musical groups from Seoul Musical groups established in 2012 2012 establishments in South Korea South Korean musical duos