Kenny G. is another of DIO's goons. In order to aid Telence, Kenny G. uses his Stand to trap Joseph Joestar and Jotaro Kujo with Telence. With this, he manages to separate them from the rest of the group so Vanilla Ice could attack. He then created several illusions to confuse the ones left, making DIO's mansion display much more staircases and ways than it actually had. By the time they arrived at his location, however, Muhammad Avdol easily discovered where he was hiding using one of Magician's Red's abilities. Iggy then used The Fool and disposed of him before he could do any damage.

Source: (JoJo's Bizarre Wiki)

Appears in episode #18 (The Miasma of the Void, Cool Ice, Part 1). Crunchyroll translated his name as Billie Jean instead Kenny G.