
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.

Love, American Style
1969

Disney's Adventures of the Gummi Bears
1985

Snorks
1984

Scooby's All-Stars
1977

Gremlins
1984

The Scooby-Doo/Dynomutt Hour
1976

Challenge of the GoBots
1984

Hong Kong Phooey
1974

The Incredible Hulk
1982

Challenge of the Super Friends
1978

The 13 Ghosts of Scooby-Doo
1985

Bedknobs and Broomsticks
1971

The Biskitts
1983

The Oddball Couple
1975

The Great Grape Ape Show
1975

Charlotte's Web
1973

The Dogfather
1974

The Day of the Locust
1975

Doctor Dolittle
1970

The Scooby-Doo Show
1976

Bailey's Comets
1973

Wizards
1977

The Nine Lives of Fritz the Cat
1974

Sheriff Hoot Kloot
1973

The Lorax
1972

The Grinch Grinches the Cat in the Hat
1982

The Mouse and His Child
1977

The Adventures of the American Rabbit
1986

The Bear Who Slept Through Christmas
1973

The Great St. Louis Bank Robbery
1959

Flash Gordon: The Greatest Adventure of All
1982

Dr. Seuss on the Loose
1973

Medicur
1976

Deviled Yeggs
1974

Oliver Twist
1974

Support Your Local Serpent
1972