Well, for an Arcules fanfic, including his childhood friend, Tarin, would add depth. Tarin could be a regular human who is in awe of Arcules' powers but also provides a connection to his more humble beginnings. Then there's the elven archer, Elara. She could join forces with Arcules and bring her own set of skills and a different cultural perspective. Also, a mad scientist - type character, Dr. Nox, who experiments with dark magic and is constantly causing trouble for Arcules would be an interesting addition.
Some great characters to include in an Arcules fanfic are a noble knight named Sir Garrick. He could be a bit of a rival to Arcules at first but then become an ally. A mysterious oracle named Sybil would be good too. She can give cryptic prophecies that Arcules has to decipher. And a shapeshifting creature, Lyra, who can change into different animals and helps Arcules in various situations, especially when it comes to spying or getting out of tight spots.
You could include his sidekick, a witty and agile thief named Lira. She could provide comic relief and also be useful in sneaking around. Another good character would be the wise old wizard, Merlinus. He could offer Arcules advice and knowledge about the magic in the world. And a villain like the shadowy warlord, Zargoth, would be great to create conflict.
Courtney Whitmore (Stargirl) herself is, of course, essential. But adding characters like Pat Dugan, her step - father, can bring in more family - dynamic elements. He could be a source of wisdom and support for Stargirl in the story.
You might also consider creating new characters. For instance, a scientist who is a descendant of Victor Frankenstein and is trying to either correct his ancestor's mistakes or continue his work in a more ethical way. Or a journalist who discovers the existence of the monster and decides to expose the story, which would then lead to a whole new set of events and interactions involving all the other characters.
An interesting plot for an Arcules fanfic could be that Arcules is framed for a crime he didn't commit. He then has to go on the run while trying to clear his name. Along the way, he discovers a conspiracy that is much larger than he initially thought. Another idea is to have Arcules be the mentor to a young hero - in - training. He teaches the youngster about the responsibilities that come with power. And a third plot could be Arcules falling in love with a being from a different species and having to overcome the cultural and physical differences between them.
You could have an elderly couple who come in every day for their morning coffee. They've been married for decades and share their love story with the other customers. Then there's the young artist who uses the coffee shop as their studio, sketching the people and the interior. And don't forget the over - enthusiastic coffee blogger who visits the shop to review their drinks and ends up getting involved in the shop's drama. There could also be a street musician who plays outside the coffee shop and sometimes comes in for a free cup of coffee in exchange for a song.
Well, her family members could be great additions. Her parents, for example, could have influenced her in different ways. Also, her siblings if she has any, might be involved in power struggles or family dramas. Another good character could be her loyal servant or bodyguard, someone who has been with her through thick and thin and has some interesting backstory.
Definitely the classic spy archetypes like the suave and experienced agent, the tech - savvy gadget expert, and the tough - as - nails female agent. You could also include a mysterious informant who has connections all over the underworld. This character could provide crucial leads but also be a bit of an enigma, making the spies question their motives.
The Terraria Guide could be a great character to include. He has a lot of knowledge about the Terraria world, so in a crossover, he could be the one trying to figure out the new world they're in. For example, if it's a crossover with Terraria and Hollow Knight, he could study the strange bugs and lore of the Hollow Knight world.
The main character from Pokemon Sun, of course, is essential. You could also add in some original characters, like a mysterious trainer from another region who has come to Alola in search of a specific Pokemon. Professor Kukui can be a great supporting character, providing knowledge and guidance. And don't forget about the Ultra Beasts. You could create a character who has a special connection to an Ultra Beast, perhaps they can communicate with it in some way.
Gwen is an obvious choice. She can bring her magic skills and her relationship with Ben to the story. Also, Grandpa Max, who has a lot of knowledge and experience that can be useful in the fanfic. Another good character could be Kevin, with his ability to absorb materials and his complex relationship with Ben.
Draculaura would be a great character to include. She and Clawdeen could bond over their different yet equally unique monster identities. Also, Frankie Stein would fit in well as she's always up for new adventures and could add an element of chaos. And of course, Clawdeen's family members like her parents or siblings can be included to explore family dynamics.