One more theme that is often seen is friendship. Bunnymund forms bonds with humans in many fan fictions. These friendships can be really heartwarming as they overcome differences in species and culture. It shows that even a magical being like Bunnymund can find common ground and build meaningful relationships with humans.
A common theme is the interaction between Bunnymund and humans. It often shows how he copes with human emotions and behaviors that are so different from his own world.
There's a fan fiction titled 'Bunnymund's New Beginning'. In this, the author explores Bunnymund's life in a more modern human - influenced setting. It delves deep into his relationships and how he adapts to new situations. There are some really interesting character developments in it.
I'm not an expert on this, but often there could be themes related to the challenges of the unexpected pregnancy, like how the character deals with the physical and emotional changes. Another theme might be the reactions of the other characters in the story towards the mpreg situation.
Often, there are themes related to sacrifice. Bunnymund might get hurt while trying to protect someone or something important. And also, the theme of isolation can be present, where his being hurt leads to him being alone and having to deal with the pain on his own.
One common theme is discovery. Often, the OC is new to the world of Bunnymund and has to discover how things work, like the magic and the rules of the Easter realm. For example, in many stories, the OC will be amazed at how Bunnymund can manipulate time and space for Easter egg hunts.
One common theme could be recovery. After getting hurt, the story might focus on bunnymund's journey to heal, both physically and emotionally.
A frequent theme is the clash of cultures. Since Sonic comes from his own unique world and then interacts with humans, there are differences in how things are done, beliefs, etc. Also, self - discovery is a theme. Human characters might discover new things about themselves when they are with Sonic, and Sonic may also learn new things about himself in relation to humans. For example, in some fan fictions, a human character discovers their hidden courage when facing danger with Sonic.
One common theme is his struggle with leadership. In many fan fictions, he's shown grappling with the heavy responsibility of leading the mutants. For example, in 'The Burden of Leadership', he constantly questions if he's making the right decisions for his people.
The theme of protecting each other also pops up a lot. Given their roles as Guardians, they are both in the business of protecting things (Tooth - teeth, Bunnymund - eggs). Fanfictions often show them protecting each other not just from physical threats, but also from emotional harm, which is a really sweet and endearing aspect of these stories.
Another theme is the balance of nature. Since they are associated with different seasons, many fanfics explore how their relationship affects the natural order. For example, they might have to work together to ensure that winter doesn't overstay and disrupt the coming of spring.
One common theme is friendship. Since they are from different 'worlds' in the original lore, seeing them form a bond is a big part of many fanfics.