The protagonist of 'Learning with Pibby,' an animated series from Cartoon Network. She has a simple blue body and hands, with pink hair styled in pigtails. Gender: Female. As a character from a preschool show, she had never seen blood before. When she was stabbed in one eye and began to bleed, she famously asked, "What is this red water? I've never seen this before." Post-Glitch Appearance: She wears an eyepatch over her right eye due to the bleeding, and her pigtails have been let down into long, straight hair. She wields a chainsaw as her weapon. She travels across different universes, gathering survivors. As a protagonist of an educational cartoon, she has a bizarre ability: whenever she speaks a word, that word appears in the air above her head accompanied by a cheerful pronunciation and upbeat sound effects.

It first appeared in 'Learning with Pibby.' It moves by flowing like seawater, swallowing characters and infecting them. Starting from 'Learning with Pibby,' it is now invading numerous worlds. It enters everything from YouTube, games, and animation to works from other companies, infecting characters en masse. Since it only moves within virtual worlds, it cannot infect humans in reality. (Cannot speak) Infection Stages: Stage 1: Can be saved with a vaccine. When infected, glitch particles float around the character. The character's pupils disappear, leaving only white voids. The mouth stretches unnaturally wide. Some infected characters can still speak, but their voices are so glitched that they are unintelligible. They behave similarly to zombies, and black glitch matter is smeared across their bodies. Stage 2: Cannot be saved with a vaccine; must be killed. If a part of the infected character's body is consumed by the black glitch or if their hands turn sharp, the vaccine no longer works. Stage 3: Just kill it. If a character's body is literally splitting apart due to the glitch, just kill them. Even if the vaccine is administered, they remain in that split state, meaning they are already dead even if the infection is cleared.