In such a fanfiction, they might start as rivals. Sonic, with his speed and carefree attitude, could initially clash with Shadow's more brooding and serious nature. For example, they could compete in a race across a fantastical landscape filled with loops and obstacles. Sonic would be in it for the thrill, while Shadow might see it as a test of his own abilities.
Another possibility is that they discover something about their pasts that links them. It could be a hidden power or a long - forgotten prophecy. This new knowledge could change their relationship from one of suspicion to a more complex bond, where they are both intrigued by what they can learn from each other.
They could also end up as allies. Maybe there's a common enemy like Dr. Eggman who has a new diabolical plan. Classic Sonic's quick thinking and Shadow's combat skills would combine to defeat the foe. They'd learn to respect each other's strengths and work together towards a common goal.
Well, they could have an epic race. Modern Sonic is all about speed and his cool modern moves, while Classic Sonic has his own charm. They might start competing, with each trying to outdo the other in different terrains. It would be a showdown of different Sonic eras.
In such a fanfiction, they might start by being a bit skeptical of each other. Modern Sonic is used to his high - speed, action - packed world, while Boom Sonic has his own unique charm and way of doing things. They could end up in a race to prove who's faster, which would be really exciting to read about.
In a 'sonic meets pokemon fanfiction', Sonic could end up in the Pokemon world and start racing against some of the faster Pokemon like Rapidash. Maybe he'd form an unlikely friendship with Pikachu, with Pikachu using its electric attacks to help Sonic out of tough situations, like zapping robotic enemies that Sonic might encounter in this new world.
In a Sonic meets Captain Marvel fanfiction, there could be a plot where Sonic's rings have some sort of connection to the power of the Tesseract (which is related to Captain Marvel's story). They both have to figure out what this connection is and how to use it to save both their worlds. It could be a really exciting adventure with Sonic zipping around and Captain Marvel blasting enemies with her photon blasts.
Well, Sonic might have some exciting adventures with his siblings. They could team up to fight against a common enemy, like Dr. Eggman. It would be really cool to see how they use their unique abilities together.
Dr. Eggman might also be a part of the story. He's the main antagonist in the Sonic series. His evil plans could be the catalyst for Sonic and Shadow's encounter. Whether it's stealing chaos emeralds or creating some new doomsday device, Eggman's actions could force Sonic and Shadow to interact and either fight against or alongside each other.
Well, in this fanfiction, Batman might team up with The Shadow to fight a common enemy. They could combine their detective skills and combat abilities to take on a supervillain who is causing chaos in Gotham City.
Well, in this fanfiction, Spiderman might learn some new skills from the Shadow. The Shadow could have some unique fighting techniques or ways of moving around the city that Spiderman has never seen before. So, Spiderman could incorporate those into his own fighting style. Also, their personalities could clash at first. Spiderman is more of a talkative and quippy hero, while the Shadow is often more brooding and mysterious. But eventually, they could find common ground and work together really well.
In such a fanfiction, Spiderman and Shadow might initially be at odds. Spiderman, with his sense of justice and responsibility, could view Shadow as a threat due to his more brooding and sometimes violent nature. However, they might find common ground in fighting a greater evil. For example, a powerful villain that neither could defeat alone. They could combine their unique abilities, Spiderman's web - slinging and superhuman strength with Shadow's speed and chaos powers to take down the bad guy.
They might go on an adventure. Maybe they'll discover a hidden treasure or face a new enemy together.