He was first known as Stone at Cocky Boys before he became Stone Sully. He does use the username rsullivan24 on Chaturbate but uses the name Stone Sully, where he gained 10k followers in just a short amount of time.
A fan even created Sully his own tip menu. If you want to see his feet, you tip 31 tokens. He also sells items like his underwear for 1000 tokens.
He just created a profile at Flirt 4 Free as Stone Chase.