Their relationship would become more centered around the future. They'd have more serious conversations about how to raise the child. Valka might be more open about her past experiences with dragons to Stoick, so they can decide how to share that part of her life with the baby. And Stoick would be more cautious in his actions, not wanting to put Valka or the unborn baby in danger.
Yes, there are likely some popular ones. For instance, some fanfictions that explore the relationship between Hiccup and Astrid during the time leading up to HTTYD 2 are quite popular. They might show how their relationship evolves and how they support each other in anticipation of the new threats in the second movie.
Well, in the real world, it's not possible. But if we were to think in a more creative, fictional sense, like in a meta - story where the httyd world intersects with our own digital or written realm in some magical way, then maybe. But generally, no, as it's just a fictional entity without the physical or mental faculties to do such a thing.
This is such a unique idea. Firstly, we need to consider that 'httyd' in this context is fictional, but if we imagine it could watch fanfiction. It might react in different ways depending on the type of fanfiction. For instance, if it's a well - written action - packed fanfiction that stays true to the spirit of the original, it might enjoy seeing its world expanded. However, if it's a fanfiction that goes against the core values of the httyd world, it might be a bit shocked or dismayed.
The fanfiction might focus on how the relationships between the characters change when the two worlds of HTTYD and HTTYD2 collide. For example, Astrid might have to adapt to new ways of dragon riding she sees in HTTYD2, and this could cause some friction or growth in her relationship with Hiccup. It could also involve the dragons from the first movie learning new skills from the HTTYD2 dragons.
Unique? Well, it might be the way it can explore their relationship in a more...intense way. But since 'lemon' often involves mature themes, it can be a bit controversial. It might show a side of their bond that is different from the regular family - friendly portrayals in the original work.
One common theme is the growth of Hiccup under Stoick's guidance. Even if they have differences, Stoick's wisdom and experience help Hiccup become a better leader. Another theme is sacrifice. Stoick might sacrifice for Hiccup, or Hiccup for the ideals Stoick instilled in him.
Another option could be Wattpad. While it has a wide variety of content, you might be able to find some great HTTYD2 fanfiction related to HTTYD there. It's important to note that the quality can vary, so you may need to sift through some stories to find the really good ones.
One interesting HTTYD2 fanfiction is 'The Next Adventure'. It continues the story after the events of HTTYD2, exploring new lands and challenges for Hiccup and Toothless. It really captures the spirit of the movies.