Most likely Naruto would be one of the main characters. Since it's a Naruto - based fanfiction, he'd probably be at the center of the story. And maybe some of the Guardians from 'Rise of the Guardians' would also be main characters, like Jack Frost.
You can try looking for 'HTTYD and Rise of the Guardians' fanfiction on websites like FanFiction.net or Archive of Our Own (AO3). These platforms are popular for hosting a wide variety of fan - created works. Just search for the relevant tags or keywords on the site, and you might find some interesting crossovers between these two universes.
One common theme is the exploration of the backstories of the guardians. For example, more details about Jack Frost's past before becoming a guardian. Another theme is the relationships between the guardians, like the friendship or potential romantic relationships that could develop among them.
Well, it depends on your taste. You might find some on Wattpad as well. The fanfiction could range from simple, fun stories where the characters just meet and have a friendly chat, to more complex plots involving saving the worlds of both movies. It's always a great idea to read the reviews or descriptions before diving into a particular fanfiction to ensure it's something you'll enjoy.
Some Burgess characters could be a bit skeptical of the Guardians at first. They might think the Guardians are just stories. But when they actually meet them, they start to have a more hands - on interaction. Like a girl from Burgess who challenges Toothiana to prove she's real by showing her where all the teeth are hidden in Burgess. This leads to a fun and adventurous interaction between them.
The idea of good vs. evil is present in both. In Rise of the Guardians, it's the Guardians against Pitch Black. In Frozen, it's Elsa against her own fears which can be seen as an internal evil. In fanfiction, the Guardians could help Elsa face her fears. Jack Frost could use his carefree nature to show Elsa that she doesn't need to be so afraid. And the Frozen characters could help the Guardians in their fight against Pitch by bringing their own unique skills and determination.
In 'rise of the guardians novel', the main characters are quite diverse. Santa Claus, also known as North, is a large and jolly figure. He has his workshop at the North Pole. The Easter Bunny, or Bunnymund, is a feisty character with a strong connection to nature. Jack Frost is a young - looking spirit who controls ice and snow. The Tooth Fairy, with her fairies, is in charge of collecting teeth and keeping the memories associated with them. And Sandman, though he doesn't speak, communicates through his sand creations. These characters must work together as guardians against Pitch Black.
Well, different characters might have different reactions. Some might be intrigued by the new interpretations of their stories in the fanfiction. For example, Jack Frost might be curious about how the author portrays his relationship with the other Guardians. He could be either pleased or a bit miffed depending on whether the fanfic aligns with his self - perception.
Tooth Fairy is also quite popular. Her world of collecting teeth and her positive, energetic personality gives a lot of room for creative storytelling.
When the characters of 'Frozen' meet those of 'Rise of the Guardians', there would be a mix of reactions. Elsa, being the queen, would approach the situation with caution. She would likely be polite but reserved. Jack Frost, on the other hand, would be very eager to interact. He might show off his powers a bit to Elsa and Anna. Anna would be completely open and enthusiastic, wanting to know all about the Guardians. The Guardians, as protectors of children, would see the good in the characters of 'Frozen'. North would probably offer his help and resources if Arendelle ever faced a big threat. The Tooth Fairy would be interested in the unique culture of Arendelle. And Bunny might initially be a bit grumpy about the new situation, but would eventually warm up to the 'Frozen' characters as he saw their kind hearts and their own forms of heroism.