He played blacksmith
John Carter in
Little House on the Prairie, joining the cast during the final season, and the TV movies
Little House: Look Back to Yesterday,
Little House: Bless All the Dear Children, and
Little House: The Last Farewell. Once
Little House on the Prairie ended, Ivar asked if he could keep the set. Ivar later disassembled the house and moved it out to his home in rural LA County. Other notable TV roles include Ben Robinson in
NCIS, Paul Raines in
Highway to Heaven, and Mark Johnson in
Star Trek: Voyager. He has also had roles in numerous other major television series, including
Grapevine, General Hospital,
Crazy Like a Fox, Scarecrow and Mrs. King, Cagney & Lacey, The Practice, St. Elsewhere, The John Larroquette Show, Married with Children, Murder, She Wrote, Beverly Hills, 90210, Beauty and the Beast, Cybill, Matlock, and
Moonlighting. Feature film roles include
Creature (1985), The Big Picture (1989),
Rock-A-Doodle (1991)
, Aspen Extreme (1993), and playing
Matt LeBlanc's character's father in
Ed (1996). == Filmography ==