Well, without more context, it's hard to say exactly. However, if we assume the '278' doesn't hold a super - specific meaning, a Killer Frost fanfic might focus on her transformation. It could show how she became Killer Frost, the internal struggles she faces, like dealing with her new identity and the powers that come with it. It might also involve her interactions with heroes or villains, and how she navigates the world of the DC Comics.
One idea could be a story where Batman has to team up with Killer Frost to stop a common enemy that is freezing Gotham City. They start off distrusting each other but as they face challenges together, they learn to work as a team.
First, you need to understand the characters well. Batman is a brooding, justice - seeking vigilante, and Killer Frost has her own complex personality with her ice - related powers. Then, create an interesting plot, like a new villain that forces them to interact in a unique way.
I'm not sure where you can specifically find 'killer frost 278 fanfic'. You could try searching on popular fanfic websites like Archive of Our Own or FanFiction.net. Just type in 'killer frost 278' in the search bar and see if it shows up.
Some fanfics might explore their relationship in a more platonic or friendly way. For instance, they could be written about how they help each other grow as heroes. These types of fanfics are more in line with the positive spirit of fan communities.
In the comics, Killer Frost's death varies depending on the specific storyline. Sometimes it's due to a powerful enemy or a self-sacrifice to save others.
One great 'Batman x Killer Frost Fanfiction' is 'Frosty Encounters'. It has an interesting plot where Killer Frost is forced to team up with Batman against a common enemy. The author does a great job of exploring their dynamic, with Batman being his brooding self and Killer Frost having her cold and snarky attitude.
Killer Frost gained her powers through a scientific accident involving cryogenic experiments. This exposure transformed her and gave her the ability to control ice and cold.