A strong - willed protagonist who is initially skeptical about fate but slowly succumbs to the power of love. And a mysterious love interest who has a hidden past that is gradually revealed as the story progresses.
You could include a wise old mentor - like character who knows about their fated love and guides them through the difficulties. This character could add depth to the story by providing insights into the nature of their fated connection.
Two characters with contrasting personalities work well. For example, a shy and introverted character paired with an outgoing and adventurous one. Their differences make their fated love more interesting as they learn to understand and accept each other.
Obviously, Willy Wonka himself is a must - include. He's the heart and soul of the factory. Charlie Bucket is also great as he represents the pure - hearted visitor. The Oompa - Loompas add a lot of fun and mystery with their strange songs and unique appearance. Veruca Salt can bring in some drama as she was the spoiled brat in the original story.
Optimus Prime is a great choice. His leadership and wisdom can add depth to the story, and his relationship with Bumblebee can be explored further. Also, Sam Witwicky, as he has a strong bond with Bumblebee in the movies. Their friendship can be a central part of the fanfic.
Well, obviously Armikasa themselves are the main focus. But you could also include their friends. For example, their comrades who are with them in training or on missions. These characters can add more depth to the story by providing different perspectives and interactions.
Another good character to include is Lex Luthor. He could be the mastermind behind a plot to drive a wedge between Batman and Wonder Woman. His devious mind and resources would make him a formidable antagonist, and his interactions with the two heroes would add a lot of drama to the story.
Nami would be a great character to include as she has a deep - rooted history with Arlong. Their interactions can add a lot of drama and emotion to the story. Luffy is also a good choice as he is the main protagonist and his values of freedom and justice would contrast sharply with Arlong's tyranny.
Sonic himself is a must - include. His speed and adventurous spirit drive the story forward. Tails is also great as he can provide technical support and is Sonic's loyal friend. And Dr. Eggman, as the main antagonist, always adds conflict and excitement to the story.
Vegeta is a great choice. His rivalry with Goku adds a lot of drama and action to a fanfic. Also, Piccolo, as he has a long history with Goku and has been both an enemy and a friend. Another good character could be Gohan, Goku's son, as it can explore their father - son relationship further in the fanfic.
Definitely Naruto himself, as he is the main character of the original series. Sasuke is also a great choice as his complex relationship with Naruto can add a lot of drama. Kakashi is another good character to include. His wisdom and unique abilities can be very useful in the story. And Sakura, her growth as a ninja can be explored further in a fanfic.
Tails could be a great addition. He could be Sonic's sidekick who initially doubts Sonic's new relationship with Dash but later comes to accept it and even helps them out in some tricky situations. Another good character could be Rainbow Dash's friend Fluttershy. She could offer some gentle advice to Dash about love and relationships.
Definitely their colleagues from the precinct. Characters like Charles, Terry, and Rosa can add a lot of humor and different dynamics to the story. Charles could be the over - enthusiastic friend who always has some wild ideas. Terry could be the voice of reason and the one who gives them tough love when needed. Rosa can bring in her no - nonsense attitude and be a great source of unexpected help.