Igoo is a "rock ape" and member of the Herculoids. The Herculoids was a popular animated Saturday morning television series in the 1960s; though its plots were formulaic and uncomplicated, the series more than made up for it with charm, verve, and creativity!
The Herculoids is a team of three humans and of five pulp space opera animals each with intelligence at about the level of a 10 year old, all of them residing on the faraway planet Amzot (renamed Quasar for unknown reasons when the series was brought back a decade and a half later).
Approximately three times the height of an adult human, Igoo has incredible strength, extremely dense rock-like skin, and is nearly invulnerable to harm. He resembles a chimpanzee more than any other kind of primate.
Igoo's leader is the human King Zandor; however, Igoo has a great fondness and devotion for Tara, and he would do anything for her.