In a crossover, characters from other sci - fi franchises could be great. For example, the Doctor from Doctor Who. The Doctor's knowledge and the arc trooper's combat skills would make for an exciting combination. Also, including a character like Ellen Ripley from Alien would add a lot of tension, especially if they are in a dangerous situation together.
If it's a more fantasy - based crossover, a wizard or a powerful mage could be included. The contrast between the arc trooper's technology - based combat and the magic of the wizard would be really cool. And don't forget about characters like Captain Jack Sparrow from Pirates of the Caribbean. His roguish nature and the arc trooper's discipline would create an interesting interaction.
One idea could be an arc trooper crossing over into a modern - day Earth setting. Maybe he has to adapt to our technology and culture while also hiding his true identity. Another could be a crossover with a fantasy world, where the arc trooper's combat skills are put to the test against magical creatures.
Obviously, the clone troopers themselves are essential. Characters like Rex, Cody, and Fives are very popular. Jedi generals like Anakin Skywalker and Obi - Wan Kenobi also make great additions as they often lead the clone troopers into battle. Then there are the villains. General Grievous can be a great antagonist in a Clone Trooper fanfiction as he is a fearsome enemy who the clones often face.
A Jedi General would be a great pairing. The Jedi can provide guidance and a different perspective, while the arc trooper OC can offer their combat skills and loyalty. For example, a young and idealistic Jedi paired with a battle - hardened arc trooper OC could lead to some interesting character development.
In a Dorohedoro crossover with 'One Punch Man', Saitama would be an interesting addition. His overpowered nature would contrast with the often - more - gritty and complex power levels in Dorohedoro. Another good character could be Guts from 'Berserk'. His dark and brooding personality would fit well in Dorohedoro's gloomy atmosphere. Also, Edward Elric from 'Fullmetal Alchemist' could bring his knowledge of alchemy and his quest for truth to the Dorohedoro world.
In vegito crossover fanfiction, characters like Jiren would be great. His strength and stoic nature would make for some intense interactions with Vegito. Also, Android 18 could be included. She has her own unique set of powers and a strong will. Her presence could add some interesting dynamics, especially if she has to team up with Vegito against a common enemy. And don't forget Frieza. His evil nature and thirst for power always make for an exciting addition to any Dragon Ball - related story.
Kenny McCormick (Mysterion) could cross paths with Batman. Batman's detective skills and high - tech gadgets would make for an interesting dynamic with Mysterion's more 'underground' superhero style. They could work together to solve a mystery that spans Gotham City and South Park.
For a crossover with Doctor Who, the Doctor could be an interesting addition. He could bring his time - traveling abilities and vast knowledge to the Shadow World. And from the Shadowhunter side, Jace Wayland would be a good character to include. His charm and combat skills would make for some interesting dynamics with characters from other universes.
For a crossover with a post - apocalyptic world, characters like Mad Max could be involved. He might see the homunculi as either allies or threats in the harsh new world. In a crossover with a cyberpunk world, characters like Neo from 'The Matrix' could be interesting. The homunculi could be part of the complex digital and physical world that Neo navigates, and he could help them understand the true nature of their existence in this new, high - tech world.
In a springtrap crossover fanfiction, characters like the Purple Guy could be included. Since he has a connection to Springtrap, it would make for an interesting story. You could also include some original characters, like a brave adventurer who tries to stop Springtrap. And perhaps a mad scientist who created or is trying to control Springtrap.
The Powerpuff Girls would be great. Unikitty could join forces with them to fight crime in Townsville. Her magical powers combined with the girls' superpowers would make for an unbeatable team.