I think one of the main characters might be the principal. He or she could be in charge of all the crazy happenings in the school.
Louis, the yard teacher, is one of the main characters. He often has to deal with the chaos that goes on in the sideways school.
In stories like these, there are often a group of friends among the students who are the main characters. They could be the ones who explore the strange aspects of the school together, face challenges as a group, and learn important lessons along the way. There may also be a teacher who serves as a mentor or a source of authority, and this teacher could be a main character as well, guiding the students through their adventures in this sideways world of the elementary school.
There's Louis, the yard teacher. He's a very important character as he is often involved in the strange happenings around the schoolyard. Then there's Mrs. Jewls, the teacher in the classroom on the thirtieth floor. She has to deal with all the unique students in her class.
I don't know for sure, but it could be the regular students and teachers from Wayside School like Mrs. Jewls and some of the well - known students.
The main characters are Todd and Bull, as the title suggests.
Louis, the yard teacher, is quite interesting. He has to deal with all the crazy things that happen in the schoolyard. Also, Todd, one of the students, is fun to follow as he experiences all the oddities at Wayside School. There are so many other characters too like Mrs. Jewls, the teacher on the thirtieth floor, who has her own unique teaching style.
One of the most interesting characters has to be Todd. His journey in the crazy Wayside School is full of funny and unexpected moments. He struggles at first but then grows in this wacky school environment. There are also the other students like Bebe and Calvin who each have their own quirks that make them stand out in the stories.
In 'the wayside school stories', Mrs. Gorf is really interesting. She's a very strict teacher with some rather unique punishments. And there's Louis, the yard teacher, who is always full of energy and has his own charm.
The author of Sideways Stories from Wayside School is Louis Sachar.
Definitely Maurecia. She's got such a fun and unpredictable personality that she can bring a lot of energy to a crossover. Todd would also be great as he's often the 'normal' one in the Wayside chaos, so seeing him interact with characters from other worlds could be really interesting. And let's not forget Mrs. Jewls, who could use her wisdom and authority in a crossover situation to keep things in order or add some comical misunderstandings.