It follows the adventures of an earthworm named Jim, who is turned into a superhero by a robotic super suit. The series maintained much of the absurd and surrealist humor of the original games as well as introducing its own features. Most of the episodes revolved around one of Jim's many villains trying to reclaim the super suit, or otherwise causing mayhem through the galaxy, or some sort of problem Jim is faced with, such as returning his neighbors eggbeater, or finding a new power source after his suit is depowered. The show also often broke the fourth wall with many characters often talking to the audience and the narrator.

Many of the characters from the games were made into main characters for the show. Peter Puppy becomes Jim's sidekick and friend and Princess What's-Her-Name his love interest. Many villains from the game, including Evil the Cat, Psy-Crow, Bob the Killer Goldfish and Queen Slug-for-a-Butt also recur throughout the show. The series also created many of its own new characters, such as the Galactic Heroes League, a group of wannabe superheroes including the Hamsternator and Lower Back-Pain Man. The series also introduced a major new villain named Evil Jim, an evil duplicate of Earthworm Jim, who went on to be the main antagonist for the game Earthworm Jim: Menace 2 the Galaxy. The series also inspired the later game Earthworm Jim 3D.

The series was released by MCA/Universal Home Video on four VHS volumes in 1995, all of which are now out of print. Included episodes were:

• "Bring Me the Head of Earthworm Jim" and "Sword of Righteousness" (Volume 1)
• "Conqueror Worm" and "Day of the Fish" (Volume 2)
• "Assault and Battery" and "Trout!" (Volume 3)
• "The Book of Doom" and "Egg Beater" (Volume 4)

Each VHS tape also included a short behind-the-scenes "Cartoon School" segment, which covered various production topics including storyboarding and voice acting. There are no current plans to release the show on DVD.

A line of action figures based on the show were released. A second line of action figures was planned, but was ultimately canceled. One color variant of the Jim action figure was available only through the VHS copies. For a short time Taco Bell also released toys based on the series as part of their Kid's Meal line.

Two Earthworm Jim comic book series were created to tie the games to the animated series. Separate comics were released in the US and UK but the UK comics struggled greatly to find an audience. Submissions to the comic's letters/fan art page were so low that the publishers were forced to show episodes at local schools so that pupils could create content for them. This was noted several times within the comic itself.

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