Probably the crocodile students and maybe some teacher crocodiles.
The main characters are likely to be the young crocodiles who attend the school. There could also be adult crocodiles acting as instructors or authority figures in the school. Maybe there's a particularly smart or mischievous crocodile among the students that stands out as a main character. And the teacher crocodiles would play important roles in guiding the students, teaching them important skills and knowledge.
In 'a school for crocodiles story', the main characters would most likely be the crocodile pupils. These are the ones going through the learning experiences in the school. There might be a variety of crocodile characters with different personalities. Some could be brave and eager to learn, while others might be a bit lazy or afraid. And of course, there would probably be some kind of leadership among the crocodiles in the school, perhaps an older and wiser crocodile who acts as a principal or head teacher, guiding the whole school community.
The main idea might be about the unique experiences and learning processes of crocodiles in a school setting.
Most likely the main character is the king of the crocodiles. Since the story is named after this entity, it's reasonable to assume it focuses on this particular crocodile.
The main characters in the 'School 2021 story' could be students who are leading different storylines. For example, there might be a student leader who is trying to bring positive changes to the school. There could also be a rebellious student who challenges the school rules. And perhaps a teacher who plays a crucial role in guiding these students through their school days.
I'm not sure as I don't know the specific 'the school story'. But usually, it could be students, teachers, and maybe some school staff like the principal.
I'm not entirely sure about all the main characters specifically in 'school 2013 story' without more in - depth research, but usually in a school - based story, there would be students who are leaders, troublemakers, and overachievers, as well as some important teachers.
I'm not sure about the main elements as I don't know the story well. But it might include the crocodiles themselves, the place Paga, and the idea of friendliness.
There could be a new student who has just transferred to the high school. This character is usually the one through which we get to discover the different aspects of the school, like the different cliques and the school's traditions. And then there may be a teacher who plays an important role in guiding the students, not just academically but also in their personal growth.
The teachers might be the main characters too. They play an important role in creating a happy school environment, so they could be central to the story. For example, a teacher who always has a positive attitude and encourages the students could be a main character.
Since I don't know the details of 'the diaper school story', I can't say for sure who the main characters are. It could be the children in the school, or the teachers who take care of them.
I'm not sure without reading the story, but it could be students, teachers, or the principal.