If it was a crossover with 'Percy Jackson', Percy could be a main character along with the Magic School Bus gang. Percy could show them around Camp Half - Blood and they could learn about Greek mythology. Meanwhile, the Magic School Bus students could teach Percy about science and how it might relate to the magic in his world.
Miss Frizzle is one of the main characters. She's the wacky teacher who drives the Magic School Bus on all those wild adventures.
I'm not sure exactly who the main characters are without reading it, but probably Ms. Frizzle and her students.
Well, it's likely that the students like Arnold, Carlos, and the others are main characters in Magic School Bus Love Stories. Ms. Frizzle also plays a crucial role. Their relationships with each other and any potential romantic interests among them would be central to the love stories. For instance, perhaps Arnold has a secret crush on one of his classmates and that could be a part of the story.
The main character is Ms. Frizzle. She is the wacky and adventurous teacher. And of course, there are the students who go on the wild rides in the magic school bus with her.
Ms. Frizzle is a main character. She's the wacky teacher who takes the kids on all those amazing adventures. Then there are the students like Arnold, who is often a bit nervous but still goes along with the wild rides. And there's also Phoebe, who adds her own unique perspective to the group.
One idea could be a crossover with 'Harry Potter'. The Magic School Bus could take the students to Hogwarts. They could learn about magic from the Hogwarts professors and compare it with their own scientific knowledge. Maybe they'd help Hermione solve a complex potion problem using scientific methods.
Miss Frizzle is a main character. She is the wacky and enthusiastic teacher who drives the magic school bus. Then there are the students like Arnold, who is often the more cautious one. There's also Phoebe, who brings a different perspective to the group. These characters are important as they experience the adventures in the story and learn from them.
There's often an OC named Lily who is a brilliant inventor. She always comes up with cool gadgets that help the Magic School Bus on its adventures. For instance, she might create a device that can analyze the chemical composition of a strange substance they encounter during a trip to an alien planet in the fanfiction.
Since I don't know the exact 'the school bus story', the main characters could be the school bus driver, the students who ride the bus, and maybe a teacher or a parent who has some connection to the bus rides.
Well, in the 'goosebumps school bus story', the main characters are likely to be the students on the bus. There could be a shy kid who is really observant and starts to notice the strange things first. Then there might be a popular kid who at first doesn't believe in the spooky happenings but later has to face the reality. And of course, the bus driver is also an important character. He could be under some sort of curse or be an accomplice to the supernatural events. The interactions between these characters and how they react to the terrifying situations on the school bus are what drive the story forward.