It really depends on the fanfic. Sometimes it could be Norbert, the dragon that Hagrid had. Since we already know about Norbert from the original books, it's easy for fanfic authors to bring him back as a protector. Another common one might be a wild dragon from the Forbidden Forest that has a special bond with Harry for some reason.
There could be an ancient and powerful dragon that has been awakened specifically to protect Harry. This dragon might have a long history in the wizarding world and is now emerging to play a crucial role in Harry's protection. In some fanfics, there might be a group of dragons, each with different abilities, working together to keep Harry safe. For example, one dragon could be good at flying fast to scout for danger, while another has extremely strong firepower to fight off threats.
Well, in some fanfics, the dragons might be portrayed as fierce yet loyal guardians. They could use their size and fire - breathing abilities to scare off enemies. For example, they might circle around Harry, creating a ring of fire to keep the dark wizards at bay.
Well, in a Harry Potter dragon lemon fanfic, the lemon could be used as a magical ingredient. For example, it could be part of a potion that helps tame the dragon. And perhaps the dragon is a new species that has a connection to the lemon - filled areas of the wizarding world. It could also be a story where a lemon - loving character tries to befriend the dragon using lemons.
Harry is the central figure for sure. Besides, there might be his friends from Hogwarts who either support or are involved in his dragon - related adventures. And of course, there will be different dragons with their own personalities. For instance, a young and curious dragon that Harry befriends and helps to grow up in a world full of wizard - dragon conflicts.
Obviously, Harry Potter would be one of the main characters. Since it's about him being the king of dragons. And probably his friends like Hermione and Ron might also be important characters as they usually are in any Harry Potter - related story, supporting Harry in his new adventure.
Well, surely Harry Potter is one of the main characters. And there might be some dragon characters that play important roles, perhaps a wise old dragon or a young, rebellious one that Harry befriends. There could also be other Hogwarts characters like Hermione and Ron, who might be involved in Harry's dragon - related adventures.
It's hard to say for sure without reading the fanfiction, but it could be Harry Potter himself. He might be at the center of the story, trying to figure out what's going on with this 'Dance of Dragons' in his world. Hermione could also be a main character, using her intelligence to research and understand the phenomenon. And perhaps some of the dragon keepers or those with a special connection to dragons in the Harry Potter world could be main characters too.
Some dragons are more aggressive by nature. In fanfics, these dragons might be more likely to attack any potential threat to Hiccup without hesitation. For example, a dragon like Hookfang might be quick to breathe fire at anyone who gets too close to Hiccup in a menacing way. On the other hand, a more gentle dragon like Meatlug might use her size to block Hiccup from harm rather than being as confrontational.
It could be a dark wizard who wants to use the dragons for evil purposes. He might try to control them and make them attack Hogwarts or other wizarding communities.
Dragons in 'Harry Potter' fanfics often serve as powerful and mysterious elements. They can be used as a plot device to introduce danger or adventure. For example, a dragon might be guarding a hidden treasure or a powerful magical object. In some fanfics, characters might form bonds with dragons, like in the books where Hagrid has an affinity for dangerous magical creatures.
One popular 'Harry Potter speaks to dragons' fanfic is 'The Dragon Whisperer'. In this fic, Harry discovers he has an unexpected ability to communicate with dragons which sets him on a whole new adventure. It's full of exciting encounters and new magical elements.