Welcome to Slime Theater!

 is an American animated crossover comedy television series, being developed by TBD. It is produced by Nickelodeon Animation Studios and it airs on Nickelodeon since May 1st, 2020.

Synopsis
SpongeBob owns a theater as he decides to host a weekly show for various Nicktoons as occasionally he and his employees get in misadventures.

Main

 * SpongeBob SquarePants (voiced by Tom Kenny) - a friendly and hyperactive sponge who hosts Slime Theater as he tries to keep things under order.
 * Patrick Star (voiced by Bill Fagerbakke) - SpongeBob's dumb best friend and assistant who occasionally screws things up, although he tries to be helpful.

Supporting

 * Wanda Cosma (voiced by Susanne Blakeslee) - a naggy fairy who is the show's executive producer as she often lays down rules and regulations.
 * Squidward Tentacles (voiced by Rodger Bumpass) - the grouchy head of the orchestra who tries to keep order in his orchestra although sometimes it fails.
 * Eugene H. Krabs (voiced by Clancy Brown) - the greedy and cheap owner of the theater's restaurant who often tries to get as much money he can as being as cheap as he can.
 * Hugh Neutron (voiced by Mark DeCarlo) - Mr. Krabs' assistant who is eccentric as he has a specialty in crafting pies.
 * Annie Bramley and Pony (voiced by Jessica DiCicco and, respectively) - a shy and friendly teenage girl and a wild pony who are the AV as Pony's wildness often ruins things.
 * Ren Höek and Stimpy J. Cat (both voiced by Billy West) - a grouchy chihuahua and an idiotic cat who are both ushers as they often fight with each other.
 * Toph Beifong (voiced by Jessie Flower) - the theater's valet who is blind, although she is rather feisty and doesn’t like being called a kid or weak.
 * Lisa Loud (voiced by Lara Jill Miller) - a mad scientist who is the theater's resident scientist as she often invents several gadgets.
 * TBD

Antagonists

 * Zim (voiced by Richard Steven Horvitz) - an evil alien who constantly attempts to both ruin the show and conquer the world, although he often fails.
 * GIR (voiced by ) - Zim's idiotic robot friend who often tries to help, although he usually screws things up.

Episodes
See List of episodes.

Trivia

 * The series tries to highlight the variety of content Nickelodeon produced over the years, both animated and live-action, while downplaying the idea that shows like flagship SpongeBob SquarePants and The Loud House have been monopolizing the channel's schedule over the last few years, giving equal focus to other cartoons.
 * The series usually has three shorts, with the first and last ones being slightly shortened/remastered versions of classic Nicktoons and the middle one being an original short.
 * The series ignores most original animated series with mostly negative reviews from fans due to the writing crew believing that any mention of them could ruin the show.
 * The writing team admits they were concerned about Ren and Stimpy due to the negative reputation their creator John Kricfalusi has gained for his hostile work environment and pedophilia claims, but they eventually decided to do so anyway due to being one of the first Nicktoons and still being rather well-beloved while they couldn't use Doug due to legal issues with The Walt Disney Company.
 * The Jimmy Neutron: Boy Genius characters are hand-drawn in linking segments to not contrast with the traditional art style while still being CGI in the shorts themselves.
 * The Avatar characters appear exclusively as The Last Airbender ones due to being the most iconic part of the duology and TBD while the Teenage Mutant Ninja Turtles characters are portrayed with their Rise designs and personalities due to being the most recent incarnation by then.
 * The series tries to respect the voice actors from most of their shows by having them to reprise whenever possible, although some exceptions would exist due to certain circumstances.
 * To avoid recasting of child actors post-puberty, some child characters are now voiced by female voice actors. Examples include Aang, now voiced by Tara Strong, and Lincoln Loud, now voiced by Kari Wahlgren.
 * Due to the passing of Ernest Borgnine, and Eartha Kitt, Mermaid Man is now voiced by Clancy Brown, Barnacle Boy by Rodger Bumpass and Vexus by Cree Summer.
 * Due to Tim Curry suffering a stroke that left him wheelchair-bound and with limited speech skills, Nigel Thornberry is now voiced by David Kaye.
 * Due to similar circumstances with Tom Kane and Jim Ward, Darwin Thornberry would later be voiced by Eric Bauza and Doug Dimmadome by Scott Whyte.