Known for Acting

Robert John Holthaus (December 28, 1928 – August 2, 1985), better known as Bob Holt, was an American actor, best known for his voice work. Holt's first film role came in 1950, acting as Octavius Caesar in Julius Caesar. His career as a voice artist began with the 1968 short film Johnny Learns His Manners, for which he provided all of the voices. He later appeared in such works as Bedknobs and Broomsticks, several animated television specials with Dr. Seuss, for example, The Lorax (1972), Dr. Seuss on the Loose (1973), The Hoober-Bloob Highway (1975) and The Grinch Grinches the Cat in the Hat (1982) and the animated film version of Charlotte's Web as Homer Zuckerman. Holt appeared in a variety of different works, including animated films for both adults (the 1974 sequel The Nine Lives of Fritz the Cat) and for children, as well as voice and acting work in live-action films (for the blaxploitation film Abby, Holt provided the voice of the Demon). In 1975, he was the voice of Grape Ape on The New Tom and Jerry Show. The same year, Holt provided the voice of Avatar in Ralph Bakshi's film Wizards. Avatar's voice was an imitation of actor Peter Falk. In 1982, Bob Holt played the title role in Marvel Productions' animated The Incredible Hulk (1982 TV series), also in the process creating a library of stock roars that would be used for many years afterwards.
1984
as Mogwai / Gremlins (voice)
1971
as Codfish (voice)
1977
as Avatar (voice)
1975
as Tour Guide
1977
as Muskrat (voice)
1973
as Homer Zuckerman (voice)
1982
as Dr. Hans Zarkov (voice)
1974
as Various Voices
1976
as Dogfather / Rocky McSnarl / Doctor (voice)
1972
as The Lorax / The Once-ler (voice)
1982
as Father (voice)
1974
as (voice)
1986
as Rotten Rodney (voice)
1983
as (voice)
1981
as Coco Nutwork (voice)
1975
as Dogfather / Pug (voice)
1973
as Santa Claus (voice)
1974
as The Demon (voice)
1974
as Dogfather / Pug (voice)
1983
as Stanley Slush