RiffTrax: Demon Island (2023)74 minNot rated yetComedyHorrorCountry of originNot yet available · likely United States (estimated from cast and crew)CastMichael J. Nelson as Self - RifferBill Corbett as Self - RifferKevin Murphy as Self - RifferCrewBill Corbett · WriterConor Lastowka · WriterJason Miller · WriterMichael J. Nelson · Writer