What could happen in a 'underfell sans meets undertale' fanfiction?

Well, in a 'underfell sans meets underswap fanfiction', it might involve a clash of cultures, so to speak. Underfell Sans is from a darker, more dangerous world where survival is tough. When he meets the Underswap characters, who are often more laid - back and kind - hearted, it could lead to some really cool storylines. For example, he could learn about friendship in a new way from the Underswap Sans, or get into trouble while trying to adapt to their more peaceful world.

Frisk would be a likely candidate. Since Frisk is the main character in Undertale and has a very adaptable personality. They could approach Underfell Sans with an open mind and try to understand him.

Another scenario could be that there's immediate conflict. Sans might suspect that this different - looking Chara has some malicious intent towards his world or his friends. So he could start a fight right away. But as the encounter progresses, they might start to understand each other better and the fight could turn into a more of a philosophical debate about the nature of their respective worlds and the actions they've taken in the past.

The fan base loves these characters so much that seeing them interact in new and unexpected ways is always a treat. The relationship between them can be explored in so many different ways, from friendship to rivalry. And the unique art styles and interpretations that often come with these fanfictions add to the overall appeal. There are also some really emotional stories that can be told about them finding common ground or learning from each other, which really tugs at the heartstrings of the readers.

There's also 'Sibling Rivalry Reimagined' which delves deep into how their personalities from their respective universes interact. It has some really interesting character development for both Sanses. It shows how their differences can lead to both conflict and unexpected understanding. The author does a great job of portraying their emotions and the way they communicate, which is quite different from the original game's interactions.

Well, it could be a really intense encounter. Maybe there would be a battle of wits as they try to figure out each other's motives. Since Horrortale Sans has been through a lot in his own universe, he might be more cautious around the other Sans. And the other Sans could be either curious or a bit scared of Horrortale Sans's appearance and the aura of horror that surrounds him.

Sans is often a very popular character in these fanfictions. In both Undertale and Underfell, he has a distinct personality. In Underfell, his more edgy and somewhat darker side can create interesting interactions when combined with the regular Undertale Sans.

One interesting plotline could be the clash of different character personalities. For example, the more aggressive characters from Underfell interacting with the kinder ones from Undertale. They might start off not getting along but gradually learn from each other.

A plot could involve a love story between a character from Undertale and one from Underfell. Their different worlds' values and cultures clash, but they still manage to find common ground and fall in love. This could lead to them trying to bridge the gap between the two universes to be together.

One possible plot twist could be that Underfell Sans turns out to be a long - lost relative of one of the Underswap characters. Another could be that a villain from Underfell follows him to the Underswap world and causes chaos. Or perhaps Underfell Sans is actually there to steal something important from the Underswap world but has a change of heart halfway through.