What are some interesting ideas for a 'sonic mega man crossover fanfic'?

One idea could be a crossover with the Sonic universe. Mega Man X and Sonic could team up to stop a new villain that is causing chaos in both their worlds. This would involve X's advanced weaponry and Sonic's speed working together in a high - action adventure.

One idea could be a racing tournament where Mario, Sonic and their friends compete. It would be a high - speed adventure with crazy power - ups from both universes. Maybe Mario could use a Sonic - inspired speed boost item, and Sonic could try out a mushroom to grow big for a short time.

One idea could be to create a fanfic where Geo meets an alternate version of himself from a parallel universe. This would lead to a lot of self - discovery and interesting battles as they compare their different skills and experiences.

Dr. Eggman could be a likely main antagonist. He might team up with some of Mega Man's foes, like Dr. Wily. Together, they could create a super - weapon that combines Eggman's mechanical monstrosities with Wily's robotic minions. Their goal could be to take over both Sonic's and Mega Man's worlds.

One idea could be Sonic crossing over with another popular game like Mario. Sonic could find himself in the Mushroom Kingdom and have to team up with Mario to stop a new threat that combines the chaos emeralds and power - ups from both worlds. Maybe Bowser has teamed up with Dr. Eggman to create this chaos.

One interesting concept is seeing Mega Man interact with characters from other game universes. For example, his encounter with Sonic could lead to some really cool action scenes. They could compete in a race or team up against a common enemy like Dr. Eggman and Dr. Wily combined.

One idea could be that Sonic accidentally enters Equestria where Rainbow Dash lives. They could then have a race to see who is faster in the new and unfamiliar terrain for Sonic. Rainbow Dash might be amazed by Sonic's speed and Sonic could be intrigued by Rainbow Dash's ability to fly while racing.

One idea could be that Sonic accidentally enters the world of Equestria Girls while chasing Dr. Eggman through a strange portal. He then teams up with the girls to stop Eggman from stealing the magic that powers their world. Another could be a race between Sonic and Rainbow Dash which gets interrupted by a common enemy.

One idea could be Sonic and his friends accidentally end up in the Pokemon world. Sonic's speed could be a unique ability in Pokemon battles, like a super - fast attack or a way to quickly dodge enemy moves. For example, he could use his speed to outrun a powerful Pokemon's attack and then counter - attack. His friends like Tails could use his inventions to interact with the Pokemon technology, perhaps creating new Pokeballs or devices.

One interesting concept could be the combination of Mega Man's robotic abilities and Samus' exploration skills. For example, Mega Man might use his arm cannon in the more maze - like environments typical of Metroid games. Another concept could be the meeting of their respective villains. Dr. Wily and the Space Pirates could form an alliance, creating a greater threat for the heroes to overcome.