High Quality Content by WIKIPEDIA articles! Michael "Sonny" Corinthos, Jr. is a fictional character on the popular ABC soap opera General Hospital. Maurice Benard has played the role, that of a manic depressive Mob boss living in Port Charles, since the character`s storyline originated on August 13, 1993. Sonny is also one half of two of shows Supercouple pairings, Sonny and Brenda and Sonny and Carly.