A Cheshire Cat has appeared at various times in various themes in Irregular Webcomic!. Its travels seem to be closely linked to the End of the Universe.
Cheshire Cat chases Rat through dwarven solarium
Cheshire Cat chases Rat through Dr. No's nuclear reactor
Cheshire Cat chases Rat through Serron & Iki Piki's jail cell
Cheshire Cat chases Rat through a Vatican corridor
Cheshire Cat chases Rat through Ishmael's dorm
Cheshire Cat jumps onto Ishmael's lap in his dorm
Cheshire Cat continues to sit on Ishmael's lap
Ishmael identifies Cheshire Cat on lap to Martians as "Moby Tom"
Neither appears but Prof. North Dakota Jones rues not throwing a boot at the Cheshire Cat (referring back to 1624
).
Ishmael's Cheshire Cat plays on the floor of his dorm
Ishmael's Cheshire Cat still on dorm floor
Cheshire Cat chases Rat past Iki Piki & Serron at robot ship sales presentation
Cheshire Cat chases Rat past Mythbusters and their college-aged selves.
Cheshire Cat chases Rat on asteroid spaceship. Ishmael claims to own Cheshire Cat
Cheshire Cat chases Rat while charity collector guy raises funds to restore time flow
Cheshire Cat chases Rat by Captain Paris and ghost at helm of their ship
Cheshire Cat chases Rat past Hitler's cloned brains in jars
Cheshire Cat chases Rat past Shakespeare and Ophelia's office cubicles
Cheshire Cat chases Rat on Infinite Featureless Plane
Cheshire Cat chases Rat past Pirates in Nigerian Finance Minister's office
Cheshire Cat chases Rat through dungeon as Fantasy characters fight Balrog
Cheshire Cat chases Rat through street in Imperial Rome
On board the asteroid spaceship, Ishmael notes that the Rat vanished, and then the Cheshire Cat vanishes. Ishmael declares the Cheshire Cat must be "some sort of quantum Cheshire Cat"
In a phone call between the Yetis and Jane Goodall, the Yetis announce a cryptid reading at the Large Hadron Collider which appears to be a Cheshire Cat.
Captain Ponsonby, having traveled back to visit Lewis Carroll, asks if a Cheshire Cat has passed through.
The Cheshire Cat chases the Rat through both the Harry Potter (theme) and the Star Wars (theme)