In a crossover with Ghost in the Shell, Major Kusanagi would be an excellent addition. Her cybernetic enhancements and skills as a counter - terrorist would contrast well with Judge Dredd's more straightforward law enforcement style. They could work together to solve a case that involves both the high - tech world of Ghost in the Shell and the chaotic Mega - City One.
One idea could be a crossover with Blade Runner. Picture Judge Dredd in the dystopian, neon - lit streets of Los Angeles from Blade Runner. He could be on a mission to track down a replicant who has escaped into Mega - City One. The contrast between the two different but equally gritty futures would make for a great story.
Judge Dredd is the central character, of course. He's known for his strict enforcement of the law. Judge Giant is another character that often appears. He's a reliable ally to Dredd. And we can't forget about Judge Hershey, who plays significant roles in different story arcs and has her own leadership qualities.
Hermione Granger from 'Harry Potter' could be an interesting addition. She could use her magic knowledge to study the mummy. Maybe she could find a spell to control or at least understand the mummy better. It would be a really unique combination of magic and ancient Egyptian mystery.
Professor Oak could also be an interesting addition. As a Pokémon expert, he might be fascinated by Mewtwo and try to study it. This could create a conflict as Mewtwo is not one to be easily studied. It could also lead to a deeper understanding of Mewtwo's origin and abilities.
Batman would be a great character to include. His no - kill rule contrasts with Deadshot's assassin nature. Their interactions would be full of tension and moral debates. Harley Quinn could also be included. Her chaotic personality could add an element of unpredictability to the story. She might team up with Deadshot for a mission or be a distraction during one of his hits.
There are also characters like Rico, who has his own story arc and is related to Judge Dredd in an interesting way. And then there are the various criminals and citizens that Judge Dredd deals with, each adding to the complexity of the story world.
Judge Dredd is most likely one of the main characters as he is the central figure in most Judge Dredd stories. There might also be villains or other Judges that play important roles.
For a crossover with a classic cartoon like Tom and Jerry, Jerry could be a really interesting character to include. Jerry is always getting into scrapes with Tom. Maybe Doc McStuffins could be the one to treat Jerry's little bumps and bruises after his run - ins with Tom. And she could also try to make Tom understand that he shouldn't be so rough with Jerry.
In a 'baki the grappler crossover fanfiction', characters like Kenshiro from 'Fist of the North Star' would be great. His powerful martial arts skills would contrast well with Baki's grappling. Also, Goku from 'Dragon Ball' with his superhuman strength and energy attacks. And Naruto from 'Naruto' with his ninja skills and large - scale jutsu could create interesting interactions with Baki.
The Teenage Mutant Ninja Turtles would be great. Leonardo, Donatello, Michelangelo, and Raphael could meet Kick and teach him some new fighting moves. In return, Kick could show them some crazy skateboarding tricks. They could all team up to fight a new villain in New York City.