Spiff encountered a Zokk while stranded on a desert planet. As Spaceman Spiff knew about Zokks despite being unaware of the planet's name implying that Zokks are present on other planets. They apparently travel alone.
The Zokk featured is grayish-blue in color, and very similar to pterodactyls and bats in its morphology. Uniquely, though, it possesses two green antennae on top of its head and has a mouth lined with sharp teeth.