One popular character to be paired with Dark Kiva is Kiva himself. Their complex relationship as two sides of the same coin makes for interesting stories. Another could be Wataru, as he has a connection to Kiva and by extension, an interesting dynamic with Dark Kiva.
One interesting plot could be about Dark Kiva's origin story. Maybe exploring how he came to be and the secrets behind his powers. Another could be a story where Dark Kiva teams up with an unexpected character, like a hero from another series, to fight a common enemy that threatens both of their worlds.
Masked Knight Kiva's list was as follows: Kamen Rider Kiva Kamen Rider Kiva 2017 Kamen Rider Kiva -Dragon Me Kamen Rider Kiva -Dragon I 2 Kamen Rider Kiva -Dragon Me 2017 6. Kamen Rider Kiva Kamen Rider Kiva (2) 8 Kamen Rider Kiva Superstar 2017 9 Kamen Rider Kiva Super Actor-Dragon Me Kamen Rider Kiva Super Actor-Dragon Me 2 11 Kamen Rider Kiva Superstar-Dragon Me 2017 Kamen Rider Kiva's Super Strength Kamen Rider Kiva's Super Strength (2) Kamen Rider Kiva Super Power 2017 Kamen Rider Kiva's Super Strength-Dragon Me Kamen Rider Kiva's Super Strength-Dragon Me 2 Kamen Rider Kiva's Super Power-Dragon Me 2017 Masked Rider Kiva's Super Acting Ability Masked Rider Kiva's Super Acting Ability (2) Masked Rider Kiva's Super Acting Ability 2017 Kamen Rider Kiva's Super Acting Ability-Dragon Me Masked Rider Kiva's Super Acting Ability-Dragon Me 2 Kamen Rider Kiva's Super Acting Ability-Dragon Me 2017 Masked Rider Kiva's Superperformance Plan Masked Rider Kiva's Super-Performance Plan (2) Kamen Rider Kiva Super-Performance Plan 2017 Kamen Rider Kiva Super Actor-Dragon Me Kamen Rider Kiva Super Actor-Dragon Me 2 29 Kamen Rider Kiva Super Actor-Dragon Me 2017 Masked Rider Kiva's Superperformance: The Source of Power
Naruto can also be paired with Dark Kakashi. Naruto's unwavering belief in the good of people could contrast sharply with Kakashi's darker self. It might lead to situations where Naruto tries to bring back the old, more positive Kakashi, and through their interactions, both characters grow and learn more about themselves.
Well, a really interesting crossover concept could be a time - travel plot. Kiva travels to the Naruto universe and gets involved in the shinobi wars. Or Naruto somehow ends up in Kiva's world and has to deal with the politics and power struggles there among the Fangire clans while also trying to find a way back home. It could also be about a shared enemy that has the ability to disrupt both the balance of chakra in Naruto's world and the peace between humans and Fangires in Kiva's world.
In terms of anime characters, Ichigo Kurosaki from 'Bleach' could be an interesting addition. His ability to see and fight spirits could be related to Kiva's battles with Fangires. They could end up in each other's worlds and have to learn to use their powers together to fight off both Hollows and Fangires.
One popular character is Poppy Pipopapo. She's often a central figure in many fanfictions due to her energetic and bubbly personality. Her unique powers and her role within the kamen rider world make her a great focus for various storylines.
Love and relationships are another theme. This could be between the main characters, or it could be about the relationships that develop during their battles and adventures. For instance, a fanfic might explore a romantic relationship between a Kamen Rider and a civilian who gets involved in their fight against evil.
A cool Kamen Rider Kiva OC fanfiction concept could be an OC from another dimension. This OC could bring with them different technologies or powers from their own world. Maybe they have a device that can disrupt the Fangire's ability to transform or a power that can heal the victims of Fangire attacks. Their presence in the Kiva world could also create a rift between the different factions, as some might see them as a threat while others see them as a potential ally.
Often, Iron Man from the Avengers and Kamen Rider Decade are popular. Iron Man's high - tech gadgets and intelligence make for interesting interactions with the unique powers of Kamen Rider Decade. They can both be seen as leaders in their respective groups, so seeing them work together or clash in fanfiction can be really engaging.
Another popular character could be Blake Belladonna. Her stealthy nature and her ability to use her shadow clones could interact well with the kamen rider powers. In fanfiction, she might team up with a kamen rider to take on enemies that are difficult to defeat using her normal RWBY abilities alone. For example, a kamen rider's ability to detect hidden threats could complement Blake's stealth skills.