The Teletubbies. Picture the Teletubbies in their colorful little land suddenly being invaded by the Twisted Metal chaos. Their simple and happy world is turned upside down as the drivers race through their meadows and hills. It would be a very strange and humorous crossover.
The Care Bears. It would be really unexpected to see the cute and cuddly Care Bears in the dark and violent world of Twisted Metal. Maybe they could be there to try and bring some peace and love, but end up getting caught in the crossfire between the Twisted Metal drivers.
The Doctor from Doctor Who. He could bring his time - traveling TARDIS into the Justice League's universe. His wits and knowledge of different times and places could be a huge asset in solving a mystery that the Justice League is facing, and his alien nature would add an interesting element.
I think Groot from Guardians of the Galaxy would be really unexpected. Imagine a Hogwarts teacher trying to communicate with a talking tree. It would be hilarious and full of misunderstandings at first. But then they could find a way to work together, maybe Groot could use his strength to help with some physical tasks around Hogwarts in a really unique way.
The Doctor from Doctor Who would be an interesting addition. He could land his TARDIS in the jungle and get involved in the jungle's affairs. He might help Mowgli and the animals deal with a time - related threat, like a time - traveling villain who wants to change the history of the jungle.
Well, from the Beyblade Metal Fusion series, Gingka is a must - include. He's the main character and has a great personality for crossovers. If it's a crossover with Pokemon, Ash could be a great addition. He has his own journey and goals, and his interactions with Gingka would be interesting. Also, if it's a crossover with a superhero world, someone like Spider - Man could be included. His quick - wittedness and acrobatic skills would contrast well with the beybladers' skills.
Mario. The plumber from the Mushroom Kingdom in a crossover with Final Fight would be quite a shock. However, his acrobatic jumps and ability to use power - ups could add a unique element to the fanfiction. He could jump on the heads of the Final Fight thugs or use a fire flower to defeat them in an unorthodox way.
Gandalf from 'The Lord of the Rings'. His magic and wisdom could add a new dimension to the story. He could help the X - Men in their fight against Apocalypse, perhaps using his magic to counter some of Apocalypse's powers or providing strategic advice.
How about a character from a classic fairy tale? For instance, Cinderella could be accidentally brought into the 'The Loud House' world during the crossover. Her presence could contrast with the chaos of Lincoln's bad luck. She might try to use her positive attitude and her experience with hardships to help Lincoln deal with his situation.
Wall - E could be a very unexpected character. He's from a post - apocalyptic world where he's all alone collecting trash. In an Ever After High crossover, he could land in the school's garden and start cleaning up. The students would be so confused by this little robot. But he could also teach them about the importance of taking care of the environment, which is something not really focused on in the fairy - tale world of Ever After High.
In a crossover with Devil May Cry, Dante would be a great addition. His cocky and powerful attitude would contrast well with the more brute - force nature of the Splatterhouse protagonist. They could team up to fight some sort of demonic invasion that threatens both of their worlds.
One idea could be a crossover with a post - apocalyptic zombie world. The Twisted Metal drivers have to not only compete against each other but also fend off hordes of zombies. For example, Sweet Tooth could use his ice cream truck to mow down zombies while also trying to outmaneuver other competitors.