Well, when Hiccup is a dragon in fanfiction, it could be because of an ancestral connection or a mysterious experiment. This could open up new storylines and allow for exploration of his identity in a completely different way. Maybe it's a way to show his ultimate empathy and unity with the dragon species.
Hiccup in the fanfiction typically trains by forming strong bonds with the dragons first. He shows them kindness and respect, and then gradually introduces training exercises that are fun and challenging for both him and the dragons.
In such fanfiction, Hiccup being half dragon often leads to unique adventures and challenges. His mixed heritage might give him special powers or put him in conflict with both human and dragon societies.
Another idea for a fanfiction could be a story set in a future where Berk has become a huge dragon - human alliance. Hiccup is now the leader and Toothless is by his side as his closest companion. But there are those who oppose this new way of life, and Hiccup and Toothless must fight to protect their vision of a harmonious co - existence.
You could start by imagining Hiccup having a natural affinity for music and finding a guitar in some adventure. Maybe he discovers it in a hidden cave or gets it as a gift from a mysterious traveler.
First, think of a unique plot or adventure for them. Maybe it's a new challenge they face together or a journey to a undiscovered land. Then, focus on their relationship and how it develops through the story.
Well, in these fanfics, Hiccup being a ninja usually means he has to master the art of moving silently and quickly. He might have secret missions or have to fight against powerful foes using his newfound ninja abilities. And it could add a whole new level of excitement to the How to Train Your Dragon universe.
Hiccup is not useless. The fanfic might present him with difficult situations, but he always finds a way to contribute and make a difference. His unique skills and determination shine through.