* HeyItsThatVoice:
** Ickis is voiced by Creator/CharlieAdler, meaning that this cartoon is the first time he played [[WesternAnimation/CowAndChicken a red monster]] (only Charlie uses the "spastic, cowardly runt" voice for Ickis, not the "smug, hammy asshole" voice he uses for The Red Guy and Mr. Bighead).
*** In the Norwegian dub, Ickis and SpongeBob Squarepants shared the same actor, until [[WhatTheHellCastingAgency Trond Teigen (best known as Aladdin) took over for the sponge.]]
** Oblina is Chuckie Finster (before [[WesternAnimation/TheSimpsons Nancy Cartwright]] [[TheOtherDarrin replaced her]]) on ''WesternAnimation/{{Rugrats}}'' and the original voice of [[WesternAnimation/DextersLaboratory Dexter]] before Creator/CandiMilo replaced her.
** The Gromble is also [[VideoGame/MetalGearSolid3 The Pain]].
** Creator/TimCurry is the voice of the Snortch's assistant, Zimbo. What's really disturbing is that you can't really tell that it's him, but you know there's something unwholesome and vaguely familiar about the voice.
** Creator/JamesBelushi is Simon the Monster Hunter.
* WhatCouldHaveBeen: There was originally going to be a film adaptation of the show by Klasky-Csupo, Nickelodeon Movies and Paramount Pictures after the success of the first ''WesternAnimation/{{Rugrats}}'' film. The idea was canceled after the film would be considered too dark for kids.
* The characters got their start as just drawings on a napkin during lunch. Later, a storyline was developed around them, and the rest is history.