Batman himself is obviously one of the most popular characters. He is the central figure and the source of the 'badass' factor in the fanfic. The Joker is also very popular as he provides a great contrast to Batman with his chaos and madness. Harley Quinn is often included as well, with her complex relationship with the Joker and her own brand of insanity. Another popular character is Robin, who represents the sidekick and the future of Batman's legacy.
In 'A Song of Ice and Fire', Arya Stark is extremely memorable. She's a young girl who becomes a badass assassin. Her journey from a naive child to a skilled killer, learning the ways of the Faceless Men, is amazing. Another is Geralt from 'The Witcher' series. He's a monster hunter with his own code of ethics, and his battles against all kinds of terrifying creatures are badass. And in 'The Name of the Wind', Kvothe is unforgettable. His intelligence, his skills in magic and music, and his ability to get into and out of trouble are what make him such a great and badass character.
One of the most interesting characters could be a new character created specifically for the fanfiction with a unique bloodline ability, like the power to create illusions so real that they can physically harm opponents. Another interesting character could be an existing character from the Naruto series whose bloodline is explored in more depth, such as Rock Lee if he were to have a secret bloodline that enhances his taijutsu in unexpected ways. And there's also the possibility of a villainous character with a bloodline that gives them the ability to steal other people's chakra.
One great book with badass fictional characters is 'The Lord of the Rings' by J.R.R. Tolkien. Characters like Aragorn are badass. He's a skilled warrior, a natural leader, and has the courage to face the dark forces of Sauron. Another is 'Harry Potter' series by J.K. Rowling. Harry himself is a badass as he battles the powerful and evil Voldemort throughout his life at Hogwarts and beyond, not to mention his friends Hermione and Ron who are also very brave. Then there's 'The Hunger Games' by Suzanne Collins. Katniss Everdeen is extremely badass. She volunteers for the Hunger Games to save her sister and shows remarkable survival skills and defiance against the Capitol.
Lucy is also quite popular. She has a unique magic ability and her character growth throughout the fanfictions is interesting. She might start off as a bit of an outsider but gradually becomes an integral part of the group at the academy.
The most popular anime characters vary according to different cultures, tastes, and personal preferences. Here are some of the most popular characters in the anime industry:
1 One Piece: This ocean adventurer is the dream of many people. His courage and adventurous spirit are deeply loved by people.
Naruto: This genius ninja is a hero in the hearts of many people. His tenacity and friendship are deeply loved by people.
3 Death God Blech: This war hero has extremely high strength and charm. His friendship and sacrifice spirit are deeply loved by people.
4 Gintama: This funny, spoof anime character is the favorite of many viewers. His humor and personality are deeply loved by people.
Death Note: This genius detective has extraordinary wisdom and luck. His justice and courage are loved by people.
These were just a few of the most popular anime characters. There were many other characters that were also very popular with the audience.
You should check out 'The Dark Tower' series by Stephen King. Roland is a badass gunslinger on a quest to reach the Dark Tower. He faces numerous challenges and enemies along the way, and his skills with his guns and his unwavering determination are really impressive. 'Ender's Game' by Orson Scott Card also has a badass character in Ender. He's a child prodigy who is trained to fight against an alien race. He has to endure a lot of psychological pressure and still manages to outwit his enemies.
I think 'Naruto: The Elemental Master' is a top - notch fanfic. Here, Naruto gains control over all the elements in a very unique way, which sets him apart from his canon self. The story has great pacing and the fight scenes are beautifully written. 'Naruto: Reborn as a Jinchuriki' is another good one. It gives Naruto a new perspective as he is reborn with the knowledge of his previous life. And 'The Legendary Naruto' is a fanfic that really amps up Naruto's badassery. It has him facing god - like enemies and coming out victorious through his sheer will and newfound powers.
One could be John McClane from 'Die Hard'. He's tough, resourceful and faces numerous dangerous situations alone. Another is Sherlock Holmes. His brilliant mind and fearless attitude in solving complex cases make him badass. And then there's Aragorn from 'The Lord of the Rings'. He's a fearless leader and a great warrior.
The story of the 300 Spartans at Thermopylae is very memorable. They knew they were facing a huge Persian army but didn't back down. They fought with such ferocity that they held the pass for days. Another memorable one is the story of the Tuskegee Airmen in World War II. These African - American pilots had to face discrimination at home but still fought bravely in the skies over Europe, shooting down numerous enemy planes and proving their worth as pilots.