One interesting storyline could be a female Jack Frost being a new recruit in the X - Men. She could use her ice powers in unique ways during battles, like creating ice sculptures that can come to life and fight alongside the team. Maybe she has a backstory of being from a frozen dimension and is trying to adapt to the world of mutants.
Another storyline could involve her being related to Loki in some way. Since Loki has some control over ice and illusions, a female Jack Frost could be a long - lost relative. This would put her in the middle of Asgardian politics and power struggles. She might have to prove herself worthy while also dealing with her own identity crisis as a being with both Jack Frost - like powers and Asgardian heritage.
One possible storyline could be that in a world where the magic of Arendelle and the winter realm of Jack Frost collide. The female Jack Frost, with her mischievous yet kind nature, meets Male Elsa who is still trying to control his powers. They could go on an adventure to find a way to balance their powers and the changing seasons in both their worlds. Maybe they discover an ancient magic that binds them together and they have to work together to keep it from falling into the wrong hands.
She could be a hero on her own. Maybe she starts off as a loner, using her ice powers to protect small villages or towns from natural disasters. Then, she catches the attention of the Avengers. They see her potential and try to recruit her. She would bring a new element to the team with her ice - based abilities, different from Iceman's powers.
One possible storyline could be Percy suddenly finding himself with Jack Frost's powers. He might struggle to control them at first, like when Jack first got his powers. For example, he could accidentally freeze things or create snowstorms when he doesn't mean to.
A really interesting plot could be a time - travel one. Maybe Female Hiccup travels to Jack Frost's past or vice versa, and they have to adjust to the different time periods while also falling in love. Or perhaps there's a plot where they are both tasked with protecting a special, magical artifact that has the power to change the balance of their worlds, and they have to overcome their differences to succeed.
One interesting 'jack frost oc fanfiction' story could be about an OC (original character) who befriends Jack Frost and they go on adventures across different seasons. The OC might have a special power related to nature that complements Jack's frost powers.
One interesting 'naruto jack frost fanfiction' could be about Naruto somehow ending up in Jack Frost's world and having to learn new ice - based jutsu. Maybe they team up to fight a common enemy that threatens both their realms.
One interesting Jack Frost and Elsa fanfiction could be about them teaming up to save their respective frozen worlds from a common threat. They both have powers over ice, so it would be a great adventure with them combining their skills.
One interesting fanfiction could be where Jack Frost accidentally freezes Rapunzel's long hair and then has to find a way to thaw it without causing her harm. Another might be a story where they meet in a magical forest during a solstice event and team up to defeat an evil sorcerer who is threatening both their worlds.
Maybe in the fanfiction, baby Jack Frost is a key to a powerful magic that Loki wants to control. But as he spends time with the baby, he forms an unexpected bond. They end up on an adventure together, facing off against other magical creatures who also want to get their hands on Jack Frost for his powers.
There might be a fanfiction where Jack Frost visits Neverland and is initially at odds with Peter Pan. But as they get to know each other, they learn from each other's carefree spirits and form an unexpected friendship. They then go on adventures together across different magical realms, showing their combined abilities to the inhabitants of those places.