In case you are wondering, once you chose who your Main Character is, the other choices don't disappear. They remain in this new world, but don't have the Land Bonuses. Also yes, you CAN recruit them if you run into them and convince them to join your cause. But they are not static, so don't be surprised if they stab you in the back once you do something that personally offends them.
The Spinels (Steven Universe : The Movie) : They are in Beach City, USA. Still with a Giant Poison Injector, their Scythe and Toon Abilities, the Spinels won't start their "Movie Plan" until they find out what the heck happened to Earth. They will spend at least 2 Turn trying to gather information, and search for Steven Universe.
Light Yagami / Kira (Death Note): They are in Tokyo, Japan. Still with a Death Note - but no Ryuk- , Light will have to lay low for a couple of Turns. Expect them to spend 3 Turn on Learning Action and Personal Action that cover/change their identity. Not a huge problem, since "Light Yagami=Kira" is known in this world.
Dante (Devil May Cry) : They are in Florence, Italy. They have noticed that the world has gone haywire, but that won't distract them from their mission. Luckily for them, there is a Portal to Hell right in their territory, on the outer edge of Florence.
Romeo ( Romeo and Juliet : Composite) : They are in Verona, Italy. Currently having an existential crisis mixed with Shakespearean Insanity. They will try to arrive in England to... "talk".... with Shakespear or his descendants, but at the moment they are useless. All of their stats are debuffed until they manage to calm themself, so don't expect them to do much for at least 2 Months/Turns.
Big Jack Horner (Puss in Boots : The Last Wish) : They are in Spain! Which part? Any that touches the sea. They have been given a "Second Chance" after their death, and they are going to MILK IT. Expect them to be a Problem if you start in Europe. Their first Turn is solely Occult-focused, and they will find AT LEAST 1 Magical Object.
Quasimodo (Disney : The Hunchback of Notre Dame) : They are in Paris, France. They have to deal with Disney Frollo, Book Frollo and Musical Frollo. After being accepted at the end of their story, they don't fear the outside world as much as they did. Insult about them will mostly be ignored, and whoever tries to harm them is going to end up with a Broken arm. They nearly had an Heart Attack when they saw what "Our" Fire did to Notre Dame.
The Animaniacs Yakko , Wakko and Dot ( Animaniacs , Composite Version) : They are in the Warner Movie Lot, USA . They already knew they were Toons, so the reality shift did nothing to thwir mind. Expect them to never be an Intentional Problem.
Homer J. Simpson (The Simpson : Movie) : They are in Springfield, USA. They kinda knew of the Real World. They kinda knew they were an IP. They don't really care, they want food and beer. They are helping rebuilding in Springfield, so expect them to do that for the first 3 Turns.
Danny Fenton (Danny Phantom) : They are in the Ghost Zone. I don't know much about them, but i know that they go against malevolent ghosts. This is the Danny from the First Episode Ever, so don't expect them to be that much powerful (The Player Fentom is from when the Series ended) . They will spend 3 Turns in school, occasionally spend a Personal Action to Fight Spirits and Ghosts.
Bowser (Super Mario : Franchise) : They are in the Koopa Kingdom, DarkLands. Being one of the most well-known Videogame Bosses of all times, they aren't too surprised about a reality merge. They are Rivals to Mario, but have helped them a decent amount of times. Expect them to spend 2 Turn with Martial focused Actions, like training his army and building a new air fleet.
Dr. Robotnik (Sonic : The Movie 1 ) : They are in LA, USA. They have come into contact with Jim Carrey, and became fast friends with them. They REALLY like Carrey and their face. They keep in contact with them, and may have an idea for Propaganda/Movies about Eggman. Expect them to be studying and experimenting as much as they want in the first 2 Turns.