Perhaps there could be a plot where a mysterious villain tries to sabotage the Olympic Games. Mario and Sonic must then work together, using their unique abilities. Mario could use his jumping skills and Sonic his speed to find the source of the trouble and stop the villain in time. They also have to convince the other characters that they are on the same side and get everyone to cooperate to save the games.
One idea could be that Mario and Sonic team up to compete in a new, never - before - seen Olympic event. They have to overcome their differences in style and learn from each other to win.
A fun plot could be that there is a magical item hidden somewhere in the Olympic stadium. Mario and Sonic both sense its power and start a friendly competition to find it first. Along the way, they meet other characters from their respective universes who also get involved in the search. In the end, they realize that the item is meant to be shared among all the athletes to enhance the spirit of the games.
One idea could be a friendly rivalry between Mario and Sonic that gets intense during the Olympic Games. Maybe they both want to prove who is the better athlete in a new and unique event.
One idea could be a team - up between Sonic and Mario to compete in a new, super - difficult event that has never been in the Olympics before. They have to overcome their differences in speed and power - up usage to win.
The story involves Mario and Sonic coming together in the context of the Olympic Games. There are different levels of competition. Each character has its own set of skills that they use to try and win. For example, Mario might use his jumping skills from his adventures in the Mushroom Kingdom, while Sonic uses his super - speed. And there are also other characters from their worlds who participate, adding more fun and competition to the story.
The main characters are Mario and Sonic.
One idea could be that Sonic and Mario have to team up to save both their worlds from a new, powerful villain who has the ability to manipulate time. This would force them to use their unique speed and jumping abilities in new and creative ways.
Well, a cool plot for Mario Sonic crossover fanfiction might involve a new character that can travel between their worlds freely and is causing chaos. Mario and Sonic initially suspect each other but then realize they need to join forces. For example, this character could be stealing power - ups from Mario's world and Chaos Emeralds from Sonic's world to gain ultimate power. They would have to explore both worlds, facing their respective villains' minions along the way.
One idea could be that Mario and Sonic have to team up to save both their worlds from a new, powerful villain that is threatening to merge their dimensions in a chaotic way. For example, Bowser and Dr. Eggman could accidentally awaken an ancient evil while arguing over who is the better baddie.
Mario and Sonic themselves are the most obvious and popular choices. They are the main characters of their respective franchises and their rivalry is always exciting to explore.
Princess Peach from the Mario universe is often included. She can add a touch of elegance and sometimes be a damsel in distress or a helpful ally. Tails from Sonic's world is also popular. His intelligence and flying ability can be useful in various situations in the fanfiction, like helping Sonic and Mario solve puzzles or reach high places during the Olympic events.
Bowser can also be a great addition. He can be the antagonist who tries to cheat in the Olympics or cause trouble for Sonic and Mario. And from Sonic's side, Knuckles is a fan - favorite. His strength and gliding ability can make for some interesting interactions with the Mario characters. For example, he might get into a friendly competition with Donkey Kong over who is stronger.