Well, obviously Ben 10 and Spider - Man are the main characters. Ben, with his Omnitrix that allows him to transform into various alien forms. And Spider - Man, with his superhuman strength, agility and his web - slinging abilities.
Sometimes other characters from the Ben 10 universe like Gwen and Kevin might also be featured. Gwen has her own magical powers which could add an interesting dynamic to the story when combined with Spider - Man's abilities. Kevin can absorb different materials and has super strength, so he could also play a role in the fanfiction, perhaps teaming up with Spider - Man against a common enemy.
In addition, some of Spider - Man's well - known villains like Green Goblin or Doctor Octopus might be brought into the 'ben 10 spider man' crossover. They could be causing trouble in both Ben's world and Spider - Man's world, leading to a complex and exciting story where the heroes have to figure out how to stop them.
Obviously, Spider - Man is the main character. But often, you'll also see characters like Ka - Zar, who is a well - known inhabitant of the Savage Land. He's a great warrior and could be either an ally or an adversary to Spider - Man depending on the story. Shanna the She - Devil might also be featured. She's a fierce fighter and her presence adds an interesting dynamic to the fanfiction.
Obviously, Spider - Man himself is a main character. He is at the center of the story as it's about his past sins. Mary Jane might also be a prominent character as she is often closely associated with Spider - Man in many storylines and would be affected by his past actions.
Ben Tennyson as a baby is definitely a main character. He's usually the center of the action, whether it's him trying to figure out his powers in a babyish way or just getting into cute little scrapes. Gwen as a baby also often appears. Their relationship as baby cousins can be explored in different ways, like having little spats or being really protective of each other.
Gwen Tennyson is often featured. She has her own magical abilities and is Ben's cousin. Her presence in the fanfic can add different story elements, like when she teams up with Ben or has her own adventures. Another main character is Kevin Levin. He has his powers and his complex relationship with Ben, which can be explored in many ways in the fanfic.
Often, his friends and allies from the Marvel universe might be featured. For instance, The Wasp could be in the fanfiction, and they could team up to face some new threat together. Their relationship, both as superhero partners and friends, can add a lot of depth to the story.
Coco herself is, of course, a main character in most coco fanfiction. She is the center of the story, whether it's about her music career or her family relationships.
Willy Wonka is of course a main character. He is often depicted as an eccentric and brilliant chocolatier with many secrets. The Oompa - Loompas also feature prominently as his helpers in the factory, with their unique songs and personalities.
Obviously, the Wonderbird itself is a main character. Often, there might be a young wizard or witch who befriends the Wonderbird.
The main characters that usually show up in 2moons fanfiction include Dain. His role in the original is quite significant, and in fanfiction, he can be put into different situations. For instance, he could be involved in a mystery that was not part of the original plot. Also, Ronark is often seen, especially when it comes to stories about the leadership and power dynamics within the 2moons world.
Typically, the main characters from the original work on which the 'in a heartbeat' is based are often the main focus in the fanfiction. However, sometimes new characters can be introduced to add more depth or drama to the story.