Well, an Undertale Undyne x OC fanfiction often explores unique relationships. It can show how the OC interacts with Undyne's strong - willed and heroic nature. Maybe the OC could be a fellow adventurer, and they bond over their love for fighting for justice in the Underground. It could also delve into how Undyne might view this new character who is different from the usual inhabitants of the game world.
A good Undertale Undyne x OC fanfiction should have a well - developed OC. The OC's personality, backstory, and motives should be clear. For example, if the OC is a shy character, it should be shown how they overcome their shyness to interact with the bold Undyne. Also, it should stay true to Undyne's character traits from the game, like her loyalty and determination.
One common theme is friendship. Papyrus and Undyne are often shown building a strong bond of friendship through various adventures or just daily interactions in the Underground. Another theme is mutual respect. They both recognize each other's strengths, like Papyrus admires Undyne's fighting skills and Undyne respects Papyrus's determination.
Common themes include friendship - turned - love. They start as friends or colleagues in the Underground, and then their relationship blossoms into something more romantic. Also, there's the theme of support. For example, Undyne might support Alphys when she has problems with her scientific experiments or when she's feeling down about herself. And of course, the theme of discovery, as they discover new things about each other and about themselves through their relationship.
There are quite a few out there. Some are available on popular fanfic websites like Archive of Our Own. You can search for them using the tags 'undertale', 'undyne', and'sans' to narrow down the results.
The popularity might be due to the contrast between their characters. Undyne is a fierce and determined warrior, while Sans is more laid - back. People like to explore how such different personalities could interact.
There's also a fanfiction that delves deep into their backstories. It shows how Papyrus and Undyne first met and how their initial impressions of each other changed over time. It's really interesting as it gives a lot of depth to their relationship. It also has some great dialogue that really captures their personalities.
One popular Undyne x Alphys fanfiction is 'Lab Partners'. It beautifully explores their relationship, from their initial awkwardness to a deeper connection. It delves into how their different personalities, Undyne's boldness and Alphys' shyness, play off each other. Another great one is 'The Royal Scientist and the Captain'. This story shows their interactions within the context of the Underground world, with some really heartwarming moments as they support each other through various challenges.
One great Sans x OC fanfiction is 'A New Beginning'. It focuses on an OC who enters the Undertale world and forms a unique bond with Sans. The story has interesting character development and a well - crafted plot that keeps you engaged.
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.