The Herculoids is an American Saturday-morning animated television series, created and designed by Alex Toth, that was produced by Hanna-Barbera Productions.

[4] The Herculoids team battled against an endless stream of villains: invading robots, mad scientists, and mutants, including "the Faceless People, Destroyer Ants, Raider Apes, Mutoids, Arnoids, Zorbots, the Mekkano mechanical men and the Ogs, a strange form of vegetable life.

Award-winning video game designer David Crane has stated that he enjoyed the series as a child and that the character of Blobert from the A Boy and His Blob franchise was directly inspired by Gloop and Gleep.

Roughly contemporaneous to their own series premiere, the Herculoids made a crossover appearance in an episode of Space Ghost, "The Molten Monsters of Moltar" (sources are unclear and/or inconsistent as to exact airdates).

In the "Council of Doom" story arc, Space Ghost, while battling the combined might of all of his enemies, meets a number of Hanna-Barbera heroes just as they were debuting in their own respective series.

Upon reading, the letter is revealed to be more akin to hate mail; young Rusty Venture called the Herculoids hippies for not fighting in Vietnam.

Gloop and Gleep appeared in a cameo as captured prisoners of a hostile alien race in the Dexter's Laboratory episode "Mis-Placed in Space".

Fred Jones, Daphne Blake and Velma Dinkley disguise themselves as Zandor, Tara and Igoo at one point in the film Scooby-Doo!

The Herculoids appear in issue #50 of the comic book New Mutants when Professor X is searching for Magik on a planet in the Shi'ar galaxy.

On June 14, 2011, Warner Archive released The Herculoids: The Complete Series on DVD in Region 1 as part of their Hanna-Barbera Classics Collection.

[11] They also featured in issues #9–11 of the spin-off title, Future Quest Presents, in a story written by Rob Williams and illustrated by Aaron Lopresti.