Natsumi Hikari is a popular character in Kamen Rider Decade fanfiction. She provides a sort of 'normal' perspective in the otherwise extraordinary world of Riders. Writers might explore her growth from being a somewhat reluctant companion to Decade to becoming a more confident and important part of his adventures. Her relationships with other characters, especially Decade, are often a focus in fanfiction.
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.
Kamen Rider Decade is often a popular choice. His ability to transform into other Riders makes him a natural for crossovers. He can bring in elements from different series and connect various storylines together.
Tsukasa Kadoya, who is Kamen Rider Decade, is a key character. Then there are the other Kamen Riders from different worlds that he encounters. For example, Kamen Rider Kuuga. Their interactions with Decade shape the story. Also, Natsumi Hikari plays an important role as she is often involved in Decade's adventures and provides a different perspective compared to the more combat - oriented Decade.
Naruto is likely to be very popular as he is the main character from his own series. His energetic and determined personality can bring a lot to crossovers. Hibiki too, as the titular Kamen Rider, has his own fan following. His unique design and combat style make him stand out.
Characters from Kamen Rider Decade are also frequently included. Decade has the ability to travel between different Kamen Rider worlds, so it makes sense for him to be in a 555 crossover. His presence can introduce new story elements and bring different Kamen Rider series together in a single fanfiction.
Well, Sonic the Hedgehog could be an unexpected character. Imagine Decade and Sonic teaming up to outrun an enemy that can move at super - speed too. Another one could be Pikachu. Decade might have to deal with Pikachu's electric attacks while they fight a villain together. And how about Harry Potter? Decade could end up in the wizarding world and team up with Harry to defeat a dark wizard who has somehow got hold of Kamen Rider technology.
In kamen rider rwby fanfic, Blake Belladonna is a beloved character. Her cat - like features and her complex backstory add depth to any crossover story. She can have some really interesting interactions with Kamen Rider characters. Another popular one is Kamen Rider Kuuga. His primitive yet powerful form makes for an exciting contrast when paired with the RWBY characters. And Weiss Schnee is also a popular choice. Her ice - based powers and her posh personality can lead to some great comical or intense moments when combined with the Kamen Rider elements.
Another antagonist could be a group of Kamen Riders from different timelines who see Dark Decade as a threat to the stability of the multiverse. They might band together to stop him, even if he has good intentions in the fanfiction's plot.
Ryuki is often very popular. He's the main character in the original series, so he's a natural focus in fanfiction. His journey and his growth as a rider make him an interesting character to write about.