Updated: December 22, 2023

Stefan has appeared in several motion pictures during the 1970's and 1980's. Including Fear No Evil ( 1981 ) and Class of 1984 ( 1982 ). He also appeared in the three part mini-series Aspen ( 1977 ). At the same time, Stefan has pursued a career as a Musician ( like Bill Mumy ) and has performed as a lead-vocal for a number of rock bands over the years. Older brother of Alison Arngrim ( Nellie Oleson from "Little House on the Prairie" ).

Acting Appearances:

Starring Roles:

Land of the Giants ( 1968 ) - Barry Lockridge

Guest Starring Roles:

Dead Like Me - Druggies - Pilot ( 2 hours ) ( 2003 ) UC: Undercover - Barry Douglas - The Siege ( a.k.a. Prison Riot ) ( 2001 ) Special Unit 2 - Jared Stick - The Eve ( 2001 ) Call of the Wild - Leo Soles - Molly Brown ( 2000 ) Viper - Theodore Barnsfield - Storm Watch ( 1997 ) Poltergeist: The Legacy - Patient - Ransom ( 1997 ) The X-Files - Prisoner - Terma ( 2 ) ( 1996 ) The Sentinel - Rory Hessman - Payback (1996) Highlander - Harry - Courage ( 1994 ) T.J. Hooker - Luke Stevens - The Fast Lane ( 1983 ) David Cassidy - Man Undercover - Police Story: A Chance to Live ( aka Narc ) ( 1978 ) Police Story - A Chance to Live ( 1978 ) Switch - Keith - The Pirates of Tin Pan Alley ( 1976 ) Happening '68 - Band Contest Judge - Barbara Feldon ( 1969 ) Happening '68 - Band Contest Judge - Oliver ( 1969 ) Happening '68 - Band Contest Judge - The Grass Roots ( 1969 ) Happening '68 - band contest judge - Kenny Rogers and the First Edition ( 1969 ) Happening '68 - Band Contest Judge - The Ventures (1969 ) Happening '68 - Band Contest Judge - Friends of Distinction / Beach Boys ( on film ) ( 1969 ) Happening '68 - Band Contest Judge - Bobby Vee / Freddy Weller ( 1969 ) Happening '68 - Band Contest Judge - The Nazz / Eddie Fisher ( 1969 ) Happening '68 - band contest judge - Peggy Scott / Jo Jo Benson ( 1969 ) Happening '68 - Band Contest Judge - Tommy Boyce and Bobby Hart ( 1969 ) Happening '68 - band contest judge - Bobby Hatfield / Paul Hampton ( 1969 ) Happening '68 - band contest judge - The Cowsills ( 1969 ) Happening '68 - band contest judge - Gary Lewis and the Playboys ( 1969 ) Here Come the Brides - Tommy Blake - The Man Of The Family ( 1968 ) T.H.E. Cat - Victor, the boy, King of Limpets - King of the Limpets ( 1966 ) Combat! - Henri - Gulliver ( 1966) Gunsmoke - Jock - By Line (1966 ) Kraft Suspense Theatre - Nick Camion - Kill Me on July 20th ( 1965 )

Co Starring Roles:

7 Days - Fisherman - The Dunwych Madness ( 2000 ) The Crow: Stairway to Heaven - Chalkie - The Road Not Taken ( 1999 ) Millennium - Hugo Winston - Thirteen Years Later ( 1998 ) Millennium - Delbert - Goodbye, Charlie ( 1998 ) The X-Files - Prisoner - Tunguska ( 1 ) ( 1996 )

Movie / Mini-Series / Special Roles:

The Life - Ed