Well, think about it this way. Sonic's speed is great for scouting and getting to places fast. Mario's jumping and power - up skills are useful for combat and accessing higher areas. Yoshi has his tongue which can grab things and his ability to carry others. So, when they are in a battle, Sonic can run circles around the enemies to distract them while Mario jumps on them. Yoshi can then use his tongue to snatch any power - ups that are dropped. In a more complex scenario, like getting through a maze - like level, Sonic can lead the way, Mario can break any obstacles in their path, and Yoshi can carry them over gaps that are too wide for Sonic or Mario to jump alone.
Sonic's speed allows him to perform quick attacks and evasions. Mario's precise jumping and throwing abilities can be coordinated with Sonic's movements. For instance, Sonic can run towards an enemy, and Mario can jump off Sonic's back and throw a fireball at the enemy. Yoshi can then use his tongue to pull Sonic and Mario to safety if the enemy retaliates. In a platforming section, Sonic can use his speed to build momentum for Mario's jumps, and Yoshi can use his saddle to carry both of them over large gaps. The key is communication and understanding of each other's abilities, which can lead to some really creative and effective combinations.
Sonic's speed can be used to quickly transport Mario and Yoshi across long distances. For example, Sonic could run on a loop - de - loop and launch Mario into the air for a super high jump, and Yoshi could then use his tongue to grab Mario and land safely. Also, Mario's ability to break blocks could be used to clear paths for Sonic to run through at full speed, and Yoshi could eat enemies that Sonic might not be able to easily avoid while running.
Flash's speed can be used to quickly get Superman to places he needs to be. For example, if there's a disaster on the other side of the world, Flash can carry Superman there in an instant. Superman's strength can protect Flash when he's running at high speeds and might not be able to avoid obstacles. They can also use their abilities in combat. Flash can create distractions with his speed, allowing Superman to land a powerful blow on the enemy.
One plot idea could be a race across different dimensions. Sonic, with his speed, Mario, with his jumping skills, and Yoshi, with his unique abilities, could be competing to find a powerful artifact lost in these dimensions. Another could be a team - up to stop an evil force that threatens both their worlds. The evil force might be trying to steal the chaos emeralds from Sonic's world and the power - ups from Mario's world. And a third idea is a friendship - building adventure where they have to help Yoshi find his long - lost family in a strange new land that combines elements of both Sonic and Mario's universes.
In a story, they could also combine their abilities in a non - combat way. Naruto's ability to connect with people could be used to gather allies. Yugito's knowledge of the tailed beasts could be used to gain more information about a certain threat. Fu's water - sensing abilities could be used to find hidden locations. For example, if they are looking for a hidden lair of an enemy. Fu could sense the presence of water sources near the lair, Yugito could use her knowledge to figure out if there are any tailed - beast - related defenses, and Naruto could convince any nearby villagers to help them in their search.
Neeko can shape - shift and Nidalee has her spear - throwing and hunting skills. In a story, Neeko could shift into a small animal to scout out an area, and then relay the information to Nidalee. Nidalee could then use her accurate spear - throwing to take out threats that Neeko has identified.
Slenderman's ability to be invisible or blend into the shadows could be combined with Enderman's teleportation. For example, Slenderman could hide in the shadows while Enderman teleports them both quickly away from danger. Or Enderman could teleport to a location and then Slenderman could use his spooky presence to create a diversion while Enderman steals an important item.
Another way is for them to use their abilities for exploration. Rayquaza can fly high and far, carrying Latias with it. Latias can then use her psychic powers to sense things that are hidden or far away. For instance, they could be looking for a lost Pokémon or a special item. Rayquaza's speed and flight range combined with Latias' sensing abilities would make them a great team for such quests.
Some gaming forums also host fanfiction. For example, Nintendo - related forums might have sections dedicated to fan - made stories. Members of these forums often share their own Mario x Yoshi fanfiction or recommend good ones they've read. You can also interact with other fans there and discuss your favorite parts of the stories or even get inspiration for writing your own.
In a crossover, we could also introduce power - up items that are neutral to all of them. These items could give them a temporary boost in a particular area like strength or defense. Mario already has his power - ups like the Super Mushroom. Sonic could have a new type of ring that gives him a power similar to Mario's power - ups. Megaman could get a power - up chip that enhances his abilities in a similar way. This would create a more level playing field.
There might be a fanfiction where Mario and Yoshi have a special bond that allows them to communicate telepathically. In this story, they face a great evil that is threatening the Mushroom Kingdom. Yoshi is able to sense danger from afar and warns Mario. Together, they embark on a journey to defeat the evil and save their home. It could include exciting battles and close calls as they make their way through various levels.
Naruto's transformation jutsu could be used in interesting ways with Percy's shapeshifting abilities (if we consider some of his powers related to that). For example, Naruto can transform into a powerful animal, and Percy can also take on a form that complements Naruto's. They can then use their combined physical strength and abilities in combat. Hera could also play a role here, perhaps by providing a magical disguise or enhancement to their combined forms to make them more effective against their enemies.