Occasionally, characters that are not from any Final Fantasies whatsoever appear in the comic, usually to surprise the reader, but mostly to invoke a sense of open-mindedness in the content of the series. They mostly appear in specials like The Adventures of Gilgamesh. Below is a list of these characters.
Him is a villain from the Powerpuff Girls. In Episode 0029, Mateus accidentally summoned Him from Hell in an attempt to prove his power to Ultimecia. Him is subsequently beat into the ground due to his... tranvestite-like attire.
LauraEditLaura, despite being only one of Unlimited Saga's seven main characters, is often considered to be the overall main character of the whole game, due to the greater amount of focus she gets. She appears in The Adventures of Gilgamesh, Unlimited SaGa, where she forces Gilgamesh into learning the impossibly complex system of the game.
Tower GodEditThe Tower God is the main antagonist of Tower of Heaven. He possesses the form of a butterfly, but the power of a god. He appears in The Adventures of Gilgamesh, The Tower of Heaven, and creates asinine rules for Gilgamesh to follow as he climbs the tower.
MaximillianEditMax is the main character of Dark Cloud 2 (also known as Dark Chronicle). He appears in The Adventures of Gilgamesh, Dark Cloud 2, where he shows Gilgamesh how the inventing process works (though in an exaggerated and ridiculous manner).
MonicaEditMonica is the female lead of Dark Cloud 2, and is its only playable character other than Max. She appears in The Adventures of Gilgamesh, Dark Cloud 2, and has her clothes stolen by Max so he can use them for an invention.