Dorno And Gleep And Tundro

Hanna-Barbera became well-known for creating popular cartoons in the 1960s, such as The Herculoids. While there are three human characters in the show, Zandor, Tara, and Dorno, the show focused on the Hercloids creatures. These creatures were Zok, Igoo, Tundro, and Gloop. While the show originally ran from 1967-1969, it briefly returned in 1981-1982.