Karen Page is another character. In fanfiction, we could see her getting more involved in Frank's world on a deeper level. Not just as a journalist covering his story, but as someone who actually helps him in his missions. Maybe she discovers some crucial information that only she can access because of her job, and this changes the course of Frank's fight against crime.
Agent Madani is also somewhat underrated. Fanfiction could show more of her backstory and how she really feels about working in a world full of crime and violence. She could be given more complex relationships with other characters, not just Frank. For example, her interactions with other law enforcement agents or even some of the criminals she has to deal with.
One underrated character is Black Widow. She has a wealth of spy skills and martial arts expertise. In Avengers Battleground fanfiction, she could be the one to gather intelligence on the enemies before the battle, and then use her combat skills to take out key targets during the fight. Another character is Quicksilver. His super - speed could be a game - changer on the Battleground. He could run circles around the enemies, delivering quick blows or stealing important items. And Bucky Barnes, the Winter Soldier, with his enhanced strength and combat training, could have some great storylines. Maybe he has to face off against some of his old enemies from his time as the Winter Soldier on the Battleground.
One underrated character is Agent Coulson. In another dimension, he could have some latent superpowers that are activated, and he becomes a key player in helping the Avengers. Another is Mockingbird. She has great combat skills and could be shown in a dimension where she has to lead the Avengers in a situation where the usual leaders are incapacitated. And then there's Sif. In a different dimension, she could bring some unique Asgardian knowledge and abilities that are crucial for the Avengers' survival.
Quicksilver could be one. In the movies, he didn't get as much screen time as he could have. In a multiverse fanfiction, he could be from a universe where his powers are even more enhanced and he plays a crucial role in a team - up. Another is Mockingbird. She has great combat skills and intelligence but isn't as well - known in the Avengers context. In a multiverse story, she could be a key figure in a different reality's Avengers.
The Prowler is a really underrated character. He has a cool look and an interesting backstory. In a fanfic, he could be a sort of anti - hero, someone who has his own code but doesn't always see eye - to - eye with Spiderman. Maybe he starts out as a foe but then they have to work together against a bigger bad.
Steve Randle is often overlooked. He could be explored more in fanfiction. He's a loyal friend to Sodapop and has his own dreams and fears. Fanfiction could show his life outside of just being a greaser, like his relationship with his family or his plans for the future.
Launch. She has this really interesting dual - personality thing going on. In a fanfic, she could be developed more, perhaps having her own unique fighting style related to her two personalities.
Ser Harwin Strong is quite an underrated character. In fanfiction, you could explore his relationship with Rhaenyra more deeply. What were his true feelings? Another one is Mysaria. She has a lot of potential for exploration. Her role as a spy and her connection to Daemon could be delved into further. And there's also Laenor Velaryon. His story as a gay man in a society that may not fully accept him could be expanded in fanfiction.
The Riddler could be included more. He's a very interesting character with his puzzles and mind - games. In fanfiction, he could be given more complex plots and challenges for Batman and Robin to solve. Another is Catwoman. She often gets overshadowed by the more flamboyant villains. Fanfiction could explore more of her ambiguous nature and her relationship with Batman in a deeper way. Also, Commissioner Gordon. He could be more involved in the action rather than just being the one Batman reports to. He could have his own investigations parallel to Batman's in fanfiction.
The house staff could be underrated characters. They've been around the Hawthorne family for a long time and surely know a lot of secrets. Focusing on them could add a whole new layer of intrigue to the story.
Zuzana could be one. In fanfiction, we could explore her life more in - depth. Maybe she discovers a hidden talent related to the magical world of Karou. She could also have her own adventure that ties in with Karou's story, like getting caught up in a plot by some minor chimaera or seraphim who think she has some information about Karou.