One interesting 'Adventure Time Ice Queen' fanfic could be about her backstory before she became the Ice Queen. It might explore how she got her powers and what led her to be so cold - hearted.
One popular plotline is the Ice Queen's journey to find true friendship. In many fanfictions, she starts off as a lonely and misunderstood character. Another plotline could be her attempts to gain more power in the Land of Ooo, which often leads to conflicts with other characters like Finn and Jake. Some fanfictions also explore her past and how she became the Ice Queen in the first place.
Power and its consequences is also a frequent theme. The Ice Queen has powerful ice - based abilities. Fanfictions might delve into how she uses or misuses her powers, and how it affects her relationships with others in the Land of Ooo. Some fanfictions also focus on her backstory, trying to explain how she became the way she is, which could involve themes of loneliness and isolation as she is a rather solitary character in the show.
Archive of Our Own (AO3) is also a great place to find 'Adventure Time Ice Queen' fanfics. The tagging system there is very useful. You can search for tags like 'Ice Queen', 'Adventure Time', and also filter by things like rating, word count, and genre to find the perfect fanfic for you.
Marceline is a very common side character in Ice Queen Adventure Time fanfiction. Their personalities are so different that it creates interesting interactions. Another common one is Princess Bubblegum. Since the Ice Queen often has conflicts with the Candy Kingdom, Princess Bubblegum is bound to be involved. Also, Peppermint Butler sometimes shows up as he is often associated with Princess Bubblegum's court and can add an element of mystery to the story.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of Adventure Time fanfictions, including those about the Ice Queen. Just search for 'Adventure Time Ice Queen' in the search bar, and you'll get a list of relevant stories.
The Ice Princess stood in her glacial domain, her icy hair flowing like a frozen waterfall. She was lonely, as always. One day, Finn and Jake came by on an adventure. They were initially cautious, but Finn's kind heart reached out to her. Jake, with his goofy charm, made her laugh for the first time in ages. They decided to have a snowball fight, and the Ice Princess found herself truly enjoying the company. This simple encounter changed her view of the outside world.
The Lumpy Space Princess could also be paired with the Ice King. Her sassy attitude could contrast with the Ice King's craziness. In a fanfiction, they could end up on an adventure together where the Lumpy Space Princess tries to 'fix' the Ice King or just uses him for her own gain in a really comical way.
Well, in the Adventure Time Ice King story, Ice King is a complex figure. He lives in his ice castle. His obsession with princesses is a big part of his character arc. This is related to his past as Simon, who was in love. As Ice King, he's constantly causing chaos in the Land of Ooo. But underneath all that, there's still a bit of the old Simon left, and we can see that in some of his more tender moments, like when he takes care of his penguins.
The unique element is often the exploration of Finn's different personality in his ice form. He can be more cold - hearted in a literal sense, which creates interesting conflicts.