One common theme is the exploration of friendship. Despite their differences, sans and undyne can form a unique bond in many fanfics. For example, they might start off as rivals but gradually become friends through shared experiences.
Common themes include redemption and acceptance. Undyne may have to accept Frisk's non - violent ways, and Frisk may help Undyne see a different side of things, which is a form of redemption for her more violent tendencies. Additionally, loyalty is often explored. As their relationship develops, they show loyalty to each other in the face of various threats and challenges in the Underground.
Friendship turning into love is also a very common theme. At first, the reader and Undyne might start as friends, but as the story progresses, their relationship deepens into something more romantic. And of course, the theme of loyalty. Undyne is a very loyal character, and this is often emphasized in the fanfics as she stands by the reader through various situations.
A third theme could be acceptance. Maybe the other characters in the Undertale universe have to accept Undyne in this new state. And Undyne herself may have to accept the changes in her body and life. This could lead to some interesting character interactions and growth within the fanfic.
I'm not sure specifically about Undyne - pregnant fanfics in Undertale. Fanfics can vary greatly in quality and content. Some might explore unique character developments or alternative storylines. However, it's important to note that not all fanfics are well - written or adhere to the original spirit of the game.
One common theme is friendship turning into love. They start as friends or acquaintances, and as the story progresses, they realize they have deeper feelings. For example, in many fics, they begin by collaborating on something, like a scientific experiment or a community project.
Well, 'The Red and the Blue' is a great one too. It delves deep into their backstories and how those past experiences shape their relationship. The story shows how Undyne's boldness and Papyrus' kindness complement each other. It's a bit more of a slow - burn story, but it's really well - written and engaging.
The contrast between their personalities. Undyne is strong and fierce, while Papyrus is kind - hearted and a bit naive. When these two are paired in a fanfic, it creates a lot of interesting dynamics. For example, Undyne might protect Papyrus in a fight, and Papyrus would be there to comfort her with his gentle nature.
She is also very determined. This trait can make for an interesting dynamic in the fanfiction. If the reader is facing a difficult task, Undyne's determination can inspire them. She won't give up easily, and that attitude can rub off on the reader and help them grow as a character.
One popular 'undyne x frisk fanfic' is 'The Bonds of Determination'. It beautifully explores their relationship as they face challenges together in the Underground. Another good one is 'A New Path' which focuses on how they interact and grow closer over time.