Incorporating a human character like Dan Moroboshi from the original Ultraman series could be great. He could offer his experience and knowledge to Ultraman Orb in the crossover situation. It would be a cool way to bridge the old and new in the fanfiction.
Another good character could be Ultraman Belial. His evil nature would create a great contrast when paired with Ultraman Orb. The conflict between good and evil would be intensified, and it would be exciting to see how Ultraman Orb tries to either redeem or defeat him in the crossover story.
Definitely Ultraman Zero. He's a very popular Ultraman and his skills and personality would make for an interesting combination with Ultraman Orb. They could have some friendly rivalries while fighting side by side against a common foe.
Ultraman Zero would be a great addition. He's a well - known and powerful Ultraman. His relationship with Geed, as his mentor in a way, could be further explored in a crossover. They could have some really intense battles side by side.
Definitely include the main characters from Ultraman Nexus like the various forms of Nexus. Also, characters like Ultraman Noa could be interesting to bring in for added power and mystery.
Definitely include Ultraman Belial. Their rivalry can add a lot of tension and action to the fanfiction. When they cross paths in a new crossover setting, it could lead to some epic battles.
A more comical plot could be Ultraman Orb crossing over with a group of clumsy but well - intentioned superhero wannabes. He has to train them up while also dealing with the real threats that start to emerge. This would bring in some humor as he tries to get them in shape while also saving the day.
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.