Pibby is a proof-of-concept short aired on the official Adult Swim YouTube channel on October 30, 2021. It follows Pibby, a character from a fictional educational show, who is forced to cross a multiverse of Warner Bros. shows, chased by an unknown, glitchy "darkness" with the ability to "infect" and control characters it touches.
On April 1st, 2022, some AS originals had Pibby and Bun-Bun (glitched) inside. This was known to be the great invasion of Adult Swim (A.K.A Pibby Fools). Even the bumpers had them.
The Sign-off was even changed for AS. It had the Morph (Zoomed Out) sign off instead of the current Dinner Party sign-off.
The original music for that sign-off was replaced with a Pibby goodbye song.
Sometime later, a billboard was even redesigned to let the darkness consume it.
💙💜💚 COME AND LEARN WITH PIBBY! 💙💜💚 This season, we’ll have fun wit/h/./#/≠⌷⌷//////////////////////////////////////////// //////////////////////////////////// // / ////////////// /////////////////////////////////////////////////////////////////////////////////////////// ///////////// ///////// ///////////////////////// //////////////////////////////////////////////////////. DArkn∊∬ spills over the horizon///. .//////////////////////////////// ///// ///// /////////// ////////////////////////////. Pibby is ripped out of her safe, preschool world and thrown into unknøwn lands. She has to grow up, 💜LEARN💜, and become a b∆dass to stop the cartoon A₱⊙C⋀L¥⍴$∑//////////////////////
The short starts with the opening of a preschool cartoon show, Learning with Pibby, which is interrupted by a strange black, glitchy liquid consuming the area. The titular character, Pibby (the simply-designed girl with blue skin and pink hair), and her rabbit companion, Bun-Bun, retreat to their house where she promises that she will always keep him safe. However, the scene cuts to the darkness consuming Bun-Bun, with Pibby failing to rescue him. Just as the darkness closes in on her, she is saved as the show cuts to credits, taking her with it.
Pibby then narrates that she discovered "other worlds," being other shows, such as a generic superhero world, Bedrock (where she meets Fred Flintstone), Coolsville, where she encounters corrupted versions of Velma, Shaggy, and Scooby Doo, Ooo, where she encounters corrupted versions of Finn and Jake, and what appears to be O-Town from Rocko's Modern Life.
Additionally, the bathroom in SpongeBob's house from SpongeBob SquarePants is seen for a few seconds. Another scene shows a live-action commercial with a boy watching the animated characters run from the darkness, in which they are shown to be much smaller than the boy.
Pibby is forced to team up with a superhero's sidekick, and an aristocratic cat villain as they search for a way to stop the darkness and build a rebellion.
- Alloy Boy
- Fred Flintstone
- Porky Pig
- Dee Dee
- Craig Williams
- Rick Sanchez (development of trailer)
- Gumball Watterson
- Finn the Human
- Jake the Dog
- Velma Dinkley
- Shaggy Rogers
- George Jetson
- Lady Rainicorn
- Darwin Watterson
- Jonny 2x4
- Samurai Jack
- Rob (off-screen)
- Muriel Bagge
- A Unidentified Hand
- Tom jasper cat (probably his shadow)
- Bugs Bunny
- Ben Tennyson
- Tazmanian Devil
- Princess Bubblegum
- Space Ghost
- Two Unidentified Hands