Growth and self - discovery could be themes too. Hiccup may learn more about himself, his capabilities, and his place in the world through his experiences with the dragon.
One possible theme is friendship. The relationship between Hiccup and his dragon is a strong form of friendship. They rely on each other, trust each other, and grow together.
One possible theme could be growth and self - discovery. As a hatchling, Hiccup would be learning about himself and his place in the dragon world.
A possible motive could be revenge. If a dragon had hurt someone he loved, like his father or Astrid, he might be driven to kill it. It would be a very emotional and difficult decision for him, but his love for his friends and family could push him to that extreme.
One common theme is friendship. The bond between Hiccup and his dragon is often explored deeply. Another is adventure. They go on various quests and face different challenges.
One common theme is adventure. Since they are often in a dragon - ridden world, there are always new places to explore. Another is friendship, as Hiccup and his dragon have a deep bond that is explored further in fanfictions. And of course, there's the theme of growth, both for Hiccup as a character and in his relationship with the dragons.
In some fanfictions, it could be due to a magic spell gone wrong. Maybe a wizard or a witch was trying to do something else and accidentally turned Hiccup into a dragon. Another reason could be a cursed object. Hiccup might touch or use an object that is cursed and that causes the transformation.
A common theme is friendship. Hiccup often forms strong bonds with different dragons. Another theme is adventure. He is constantly exploring new places in the dragon world. And leadership, as he takes on the role of the Dragon King.
One common theme is friendship. Hiccup and the dragon - hybrid often form a deep and unbreakable bond, similar to a true friendship. Another theme is adventure. They usually go on exciting quests together, facing different challenges along the way.
The theme of self - discovery is quite common. Hiccup is constantly learning more about himself and his powers as the dragon lord. Then there's the theme of acceptance. He has to get humans to accept dragons and vice versa. In many fanfictions, the struggle between good and evil also plays a part, with Hiccup as the dragon lord having to fight against various threats to keep peace. And the bond between different dragon species and Hiccup is often a central theme as well, showing how he unites them all.
Love or a deep emotional connection is also quite common. It might not be romantic love in all cases, but a very strong bond that goes beyond the normal human - dragon relationship. The fanfictions often explore how this connection changes both Hiccup and the female dragon, and how they support each other through different challenges in their world.
Often, there are themes related to discovery. For example, the female dragon might be a new species that Hiccup discovers. There can also be themes of loyalty and trust. The female dragon and Hiccup have to trust each other in different situations, like facing a common enemy. And sometimes, there are themes of growth, both for Hiccup as a character and for the relationship between him and the female dragon.