Kiba could be an interesting underrated character to focus on. In the Heroic Age, he and Akamaru could have been involved in tracking down dangerous enemies or exploring uncharted territories. His sense of smell and Akamaru's abilities could be enhanced and more utilized. Also, Tenten is often overlooked. In a Heroic Age fanfiction, she could be on a quest to find the rarest and most powerful weapons, becoming a renowned weapon hunter in the ninja world.
One underrated character could be Iruka. In a fanfiction set in the Heroic Age, he could be shown as a young and ambitious ninja, not just a teacher. He might have had his own adventures and battles that shaped him into the person we see in the main Naruto story. Another is Shino. He has unique abilities with his bugs, and in the Heroic Age, he could be part of a special unit using his skills in a more strategic and crucial way.
Shino Aburame is quite underrated. In a fanfiction, he could be shown as a key figure during the Revolution. His unique insect - based jutsu could be developed further, and his calm and intelligent nature could be used to his advantage in the political and social upheaval of the time.
The Wasp. She is a powerful and intelligent character. A fanfiction could center around her leadership skills within the Avengers. Maybe she has to lead the team in a situation where all the big - name heroes are incapacitated. It would show her strategic thinking and her ability to inspire others.
The stable hands who take care of the dragons often get overlooked. They have a unique perspective as they interact closely with the dragons on a daily basis. Fanfiction could explore their lives, their dreams, and how they view the dragon riders.
The White Rabbit is often just seen as the one who leads Alice into Wonderland, but he could be so much more in fanfiction. He could be a time - traveler, for example, and his hurry is because he's always on a tight schedule to different eras. The Tweedle brothers are also underrated. They could be the key to unlocking some ancient secrets of Wonderland. In a fanfiction, they could lead Alice on an adventure full of riddles and puzzles that reveal the true nature of Wonderland. And the Caterpillar is quite an interesting character to focus on. It could be a wise sage who holds the knowledge of the entire Wonderland universe.
Hot Pie. He may seem like a minor character, but he has a lot of potential. A fanfiction could explore his life after leaving Arya. Maybe he becomes a famous baker in a large city, and through his bakery, he gets involved in the political intrigues of the city as people from all classes come to his establishment.
Hot Pie is an underrated character. He could be the focus in a fanfiction where his baking skills become more than just a side note. Maybe he bakes special treats that have magical or medicinal properties and gets caught up in the big political and power struggles because of it.
Definitely the Northuldra people in general are underrated as a whole for fanfiction. They have a rich culture that we only got a glimpse of in the movie. Focusing on one of the unnamed Northuldra characters, perhaps a young girl who was there when Elsa first arrived in the forest. She could have her own perspective on the events and her own story of how she saw Elsa as a potential savior or a threat. Also, the guards from Arendelle who were with Mattias could be the focus. Their adjustment to living in the forest for so long and their loyalty to Mattias could be explored in a fanfiction.
In Naruto, Rock Lee could be a great focus. His hard - working nature and unique fighting style could bring something new to the crossover. In the One Piece world, Usopp might be an interesting choice. His lies and inventions could create some humorous and strategic situations when combined with Naruto's world.
Peni Parker is quite an underrated character. You could write a fanfiction focusing on her further adventures in her own dimension. Maybe she discovers a new mecha - suit upgrade that gives her enhanced abilities and she has to use it to defend her city from a new threat. Another underrated character is Spider - Ham. A fanfiction about him could be really fun, like he gets lost in a dimension where he is the only non - humanoid character and has to find his way back while also causing some comical chaos along the way.
Tam is a character with a lot of mystery. He and his sister Linh are interesting, but Tam often gets overshadowed by Linh's more obvious power. Fanfiction could explore his inner thoughts and his past more. For example, a story about his time before he joined Sophie's group and what made him the way he is. And then there's Keefe's mom. She's only briefly mentioned, but she could be a really interesting character to focus on in fanfiction. Maybe she has her own secrets and plans that could change the whole dynamic of the Lost Cities if they were revealed.