One common theme is the crossover aspect. It's about how Kirby's world and the Pokemon world collide. Another theme could be friendship, as Kirby might make friends with Pokemon.
A great 'Kirby Pokemon fanfic' could involve a plot where the Pokemon world is in danger and Kirby, with his bravery and strange powers, comes to the rescue. The fanfic could detail how Kirby adapts to the rules and environment of the Pokemon world, like understanding how Pokemon evolve and how to use items like Pokeballs. He could use his powers to help Pokemon in need, forging new friendships along the way.
When Kirby encounters a Pokemon like Charizard, at first Charizard might be a bit intimidating. But Kirby's fearless nature would make him approach Charizard. Charizard could be impressed by Kirby's courage and might give Kirby a ride on its back. They could then work together in battles, with Charizard providing the firepower and Kirby using his copied moves to support and finish off opponents.
A more complex plot might be that there's a strange rift between the Kirby and Pokemon universes that's causing chaos in both worlds. Kirby and a team of powerful Pokemon, such as Mewtwo and Lugia, must work together to close the rift. Along the way, they learn about each other's powers and abilities, and Kirby has to adapt to the Pokemon battle system while the Pokemon are amazed by Kirby's ability to copy their moves.
Definitely Naruto. Naruto would be curious about Kirby's abilities and would probably want to be friends right away. They could have some fun training sessions together, with Kirby showing off his inhaling skills and Naruto his new Rasengan variations. Also, Sakura might interact with Kirby. She could be initially a bit skeptical but would come around when she sees how Kirby can be helpful in medical situations by using his powers to quickly gather medicinal herbs or supplies.
In such fanfiction, Kirby is often depicted as his cute, round self, but with a more tender side when it comes to his feelings for Jigglypuff. He might use his unique abilities to protect or impress Jigglypuff.
Ruby could be a great friend for Kirby. They both have a sort of innocence about them. Ruby's love for adventure and her kind heart would make her open to befriending Kirby. They could go on adventures together and Ruby could help Kirby understand the world of Remnant.
It has likely influenced the franchise in terms of art direction. The Japanese graphic novel's art style may inspire future Kirby games or other media in terms of character design and scenery. For example, if the graphic novel has a particularly cool way of depicting Dream Land, it could be incorporated into a game.
Well, in such a fanfiction, game Kirby could introduce anime Kirby to the more traditional power - ups from the games. Meanwhile, anime Kirby could show game Kirby some of the unique storylines and character interactions that are common in the anime. Maybe they would have a friendly competition to see who can inhale and defeat enemies faster. It would be a really interesting crossover with a lot of potential for fun and adventure.
In a 'game kirby meets anime kirby fanfiction', a plot twist could be that there is a prophecy that when the two Kirbys meet, one of them will lose their powers forever. This creates a lot of tension between them as they are not sure which one it will be. Also, it could be that an ancient artifact in the fanfiction is the key to their co - existence, but it has been broken into pieces. The two Kirbys then have to search for the pieces and put it back together while being chased by enemies who want to use the artifact for their own gain.