Main Characters Juan Epstein 2 main appearances Freddie 'Boom Boom' Washington 2 main appearances Julie Kotter 2 main appearances Mr. Michael Woodman 2 main appearances Arnold Horshack 2 main appearances Gabe Kotter 1 main appearances Vinnie Barbarino 1 main appearances Judy Borden
Recurring Guest Characters Sexy Nurse 1 guest appearances waiter 1 guest appearances Taro Takahashi 1 guest appearances