Hobbs was born in Étretat, France, to Dr. Austin L. Hobbs and Mabel Foote Hobbs. However, he was raised in New York City. Hobbs attended Solebury School in Bucks County, Pennsylvania, and received his bachelor's degree from Bard College in Annandale-on-Hudson, New York. He served in as sergeant in combat engineering during World War II and fought at the Battle of the Bulge.
Known for Little House on the Prairie 1974 Sleeper 1973 The Andromeda Strain 1971 M*A*S*H 1972 ★ 5.2 Hot to Trot 1988
Veterinarian Series ★ 5.9 Empty Nest 1988
Dr. Garrison Series ★ 7 L.A. Law 1986
Steven Henderson Series ★ 7.7 The Twilight Zone 1985
(segment "To See the Invisible Man") Series ★ 7.4 Who's the Boss? 1984
Series ★ 7.1 Hunter 1984
Dr. Spender ★ 6.2 The Man with Two Brains 1983
Dr. Brandon ★ 7 Special Bulletin 1983
Jonathan E. Herman Series ★ 5.7 St. Elsewhere 1982
Mr. Ullman Series ★ 7.2 Family Ties 1982
Professor Walter Jenkins Series ★ 7.1 Remington Steele 1982
Sam Fischer Series ★ 7.2 Newhart 1982
Series ★ 6.5 Dynasty 1981
Series ★ 7.6 Hill Street Blues 1981
★ 7 Nine to Five 1980
Doctor ★ 5.8 Any Which Way You Can 1980
Motel Clerk ★ 6.9 Elvis 1979
Jim Denny ★ 5.6 The Lady in Red 1979
Pops Geissler Series ★ 7.1 The Facts of Life 1979
Series ★ 7 Knots Landing 1979
Judge Harley Simpson Series ★ 6.9 Hart to Hart 1979
Series ★ 7.1 Diff'rent Strokes 1978
Mr. Robinson ★ 6.2 Wizards 1977
General (voice) Series ★ 7.4 Lou Grant 1977
Series ★ 7.2 The Incredible Hulk 1977
Series ★ 7 Alice 1976
Series ★ 7.5 Quincy, M.E. 1976
Series ★ 7.3 Starsky & Hutch 1975
Series ★ 7.5 Ellery Queen 1975
Medical Examiner Series ★ 7.3 Barney Miller 1975
Charlie Prevette ★ 5.1 The Nine Lives of Fritz the Cat 1974
(voice) Series ★ 6.3 Rhoda 1974
Series ★ 8 Little House on the Prairie 1974
Atty. Arthur Davis Series ★ 7.6 Happy Days 1974
★ 6.9 Sleeper 1973
Dr. Dean ★ 6.5 Heavy Traffic 1973
Jerry (voice) Series ★ 7.3 Kojak 1973
Cortazzo Series ★ 7.9 M*A*S*H 1972
Col. Drake Series ★ 7.1 The Streets of San Francisco 1972
★ 7.1 The Andromeda Strain 1971
General Sparks Series ★ 7.8 All in the Family 1971
Judge Polanski Series ★ 7.8 The Odd Couple 1970
Nathaniel Talbot Series ★ 6.6 Marcus Welby, M.D. 1969
Mr. Craddock Series ★ 7.2 It Takes a Thief 1968
Mr. Cook Series ★ 6.8 The Invaders 1967
Colonel Series ★ 5.6 The F.B.I. 1965
Giles Barton Series ★ 6.2 The Big Valley 1965
Marshal Steve Macklin ★ 6.6 Good Neighbor Sam 1964
Phil Reisner ★ 6.9 The Killers 1964
Instructor Series ★ 7.1 Gomer Pyle, U.S.M.C. 1964
Chaplain Series ★ 6.8 Mister Ed 1961
Series ★ 7.6 The Dick Van Dyke Show 1961
Captain E. Lebost Series ★ 7.6 The Andy Griffith Show 1960
Mr. Tracy Series ★ 7.7 Perry Mason 1957
Gregory Pelham Series ★ 6.3 Lassie 1954
