Nate could also be a good choice, but instead of the typical toxic relationship, you could write a fanfic where they both go through character growth and end up having a more healthy and respectful relationship. It would be a great way to explore their characters in a different light.
A new character could be introduced in the fanfic to pair with Maddy. Maybe a transfer student who is mysterious and has a different set of values. This new character could challenge Maddy's beliefs and help her grow as a person while also developing a romantic or strong friendship connection.
One idea could be exploring Maddy's dreams and ambitions outside of her relationships. Maybe she has a secret passion for fashion design and is working on her own collection in secret.
Naruto could be a great character to pair with Menma. Their personalities could create an interesting dynamic. Naruto's determination and Menma's more gentle nature could complement each other well in a story about friendship or even a budding romance.
A rogue could be a great character to pair with an artificer in fanfic. The rogue's stealth skills combined with the artificer's gadgets can lead to some really interesting heist - like scenarios. For example, the artificer could create a device that disables security systems while the rogue sneaks in to steal a valuable item.
Tanjiro would be a great character to pair with rengoku. Their different personalities could create an interesting interaction. Tanjiro's kind - hearted nature and rengoku's fiery determination could lead to some great storylines.
Hawks is a great character to pair with Dabi in fanfic. Their relationship in the original story is complex and full of tension, which can be explored further in fan - made stories. There's also Shigaraki. Since they are both important members of the League of Villains, there's a lot of potential for interesting dynamics between them in fanfics.
Yoshi would be an excellent character to pair with Bowuigi. Yoshi's friendly and helpful nature can contrast or complement Bowuigi's personalities. Donkey Kong is another good choice. His brute strength can be a great counterpoint to Bowuigi's more strategic thinking. And Toad could be added for his loyalty and sometimes comical nature.
Goku could be a great character to pair with Caulifla. His powerful Saiyan abilities and his experience in different battles could create interesting interactions with Caulifla in her futanari form. They could train together or face off against a common enemy.
Another good character to pair with Harry Salem is a young and inexperienced wizard. Harry could be a mentor figure to them, and at the same time, the young wizard's fresh view of things could inspire Harry to see things in a new light. This dynamic can create a lot of character growth and interesting interactions in the fanfic.
His sister, Mirabel, would be a great pairing. They could have adventures together, with Mirabel's determination and Camilo's shape - shifting ability. They might team up to find out more about the secrets of the Encanto or deal with a problem that the family is facing.
Well, a character like Zog could be great. Zog might have some special powers that complement Gork and Mork's abilities, and together they could form a really strong team. Maybe Zog is from a different part of their universe and has knowledge that Gork and Mork need.