One potential theme could be about the power dynamics. Bowser has always been trying to take over the Mushroom Kingdom and Princess Peach. This situation could be seen as a new form of his dominance. But on the other hand, it could also be about resistance. The Mario characters might resist this new situation, trying to find a way to reverse it or deal with it in a way that maintains the integrity of the kingdom. Also, there could be a theme of family and how this new relationship would affect the existing family structures in the Mario universe, although this is a very unorthodox and dark take on the franchise.
If such a fanfic exists, one possible theme could be the shock and chaos it would cause in the Mushroom Kingdom. The Mario characters would have to deal with this unexpected and unthinkable situation. Another theme might be about identity, as Bowser Jr. is the son of Bowser and for Princess Peach to be in this situation would completely redefine her relationship with both Bowser and the kingdom.
There might be some extremely rare and niche fan - made stories with this idea, but it's not a common or well - known concept in the Mario fanfic community. Mario games usually portray Princess Peach as a damsel in distress who needs to be rescued from Bowser, not in such a complex and inappropriate - for - the - franchise relationship as the one described in this title. So, in short, it's not a mainstream fanfic topic.
One possible theme could be family. As Bowser and Bowser Jr. are father - son, the fanfic could explore the dynamics of their family relationship. It could show how they support each other, or how Bowser is trying to raise Bowser Jr. to be a worthy heir.
One good 'bowser jr and peach fanfic' could be one where Bowser Jr. has to learn about kindness from Peach. For example, he might get lost in the Mushroom Kingdom and Peach helps him find his way back to his father, Bowser. Along the way, he starts to see her not as an enemy but as someone with a good heart.
One possible storyline could be that Bowser Jr and Toadette start off as rivals. Bowser Jr is always causing trouble in the Mushroom Kingdom, and Toadette is one of the ones trying to stop him. But as time goes on, they start to understand each other better. Maybe Bowser Jr realizes that his actions are causing harm and Toadette sees that he's not all bad. They could end up teaming up to solve a bigger problem in the kingdom, like an invasion from a new enemy.
If a 'Pinkie Pie pregnant fanfic' exists, one possible theme could be about the changes in her life. It might focus on how she copes with the physical and emotional changes that come with pregnancy. Another theme could be about the support she gets from her friends in Ponyville. For example, they could help her prepare for the arrival of the new foal, like decorating a nursery or giving her advice on motherhood.
One common theme is family - even in their own unique way. Bowser Jr looks up to Bowsette in many of these fanfics. Another theme is adventure. They often go on quests or face challenges in the Mushroom Kingdom.
One common theme is redemption. Writers often explore the idea of Bowser being redeemed through his interactions with Peach. Another theme is the power of love, like if Bowser falls in love with Peach in a more sincere way rather than just lust for power. Also, friendship can be a theme where they become friends despite their differences.
Common themes in 'Princess Peach x Bowser fanfiction' include transformation. Bowser may transform from a purely evil character to one with more nuanced emotions. There's also the theme of discovery, where both Peach and Bowser discover new aspects of each other. And of course, the theme of breaking boundaries, whether it's social or the boundaries of their own personalities in the context of their relationship.
There could also be a fanfic where Bowser and Princess Peach are both transported to a different dimension. In this strange new world, they have to rely on each other to survive. As they face various challenges together, they start to develop a deeper understanding of one another. This could potentially lead to a romantic relationship or at least a strong friendship that changes their views on each other when they return to their own world.
Well, a 'bowser x bowser jr fanfic' could be about their relationship in an interesting way. It might explore how Bowser Jr. looks up to Bowser as a father figure. Maybe it shows them on an adventure together, facing challenges in the Mushroom Kingdom. For example, they could be trying to take over a new area and Bowser is teaching Bowser Jr. the tricks of the trade.