In the 1977 film "Brigham", Moll (credited as Charles Moll) appeared as Joseph Smith, founder of the Latter Day Saint movement. Moll would go on to often portray hulking or imposing characters due to his height and deep voice. In 1979 Moll played the part of Eugene, a gangster on the TV series "Happy Days" in the episode "Fonzie's Funeral". In 1981, Moll co-starred with Jan-Michael Vincent and Kim Basinger in the movie "Hard Country", and he also played the abominable snowman in the comedy feature film "Caveman". The same year, he had a small part in the sitcom "Mork & Mindy" in the episode "Alienation", where he appeared with future fellow "Night Court" TV series cast member John Larroquette..In 1982, he played the sorcerer Xusia in "The Sword and the Sorcerer".