In the story of space exploration in general, the engineers play a huge role. They are the ones who design and build the rockets, spacecraft, and all the equipment needed for space travel. Without them, none of the big space stories would be possible.
One of the main characters could be the patriarch of the family, who is responsible for making major decisions about the ranch.
Often, the early settlers are main characters. They are the ones who started everything in the valley.
Francis Pope is also an important character. He's Nate's best friend, often getting involved in Nate's schemes and adventures. He's the more cautious one compared to Nate. For instance, when Nate wants to do something risky, Francis might be the voice of reason, but still end up going along with it most of the time.
In certain stories, the main character might be a Scout - Marine. These are young and inexperienced Space Marines in training. A Scout - Marine named Tylus could be the focus, as he tries to prove himself in dangerous missions and earn his place as a full - fledged battle - brother.
Well, there could be the fearless space marines. They are often at the forefront, fighting the necromorphs. Their training and combat skills are put to the ultimate test in the Dead Space setting.
In many 'space cowboy time stories', aside from the space cowboy, there could be an old - timer who serves as a mentor. This character has a lot of knowledge about the time - space anomalies and gives the space cowboy valuable advice. There might also be a female character who is as brave as the cowboy, often acting as his partner in adventures. She might have special skills like hacking into advanced time - traveling devices or being able to communicate with alien species that are crucial to the story's progression.
I'm not sure specifically as I haven't read it in detail, but usually in such collections there are likely to be some tough - guy characters involved in the 'knockover' situations, like thieves or con - men.
Princesses are of course the main characters. There could be princes as well, who often play important roles like helping the princess in her quests or being part of a love story.
The humans in the stories can also be considered main characters. For example, a poor farmer who is visited by an angel. His reaction to the angel's presence and how his life changes as a result makes him an important part of the story. So both the angels and the humans they encounter play key roles in the stories of 'the big book of angel stories'.
I don't know for sure since I haven't read 'big dave's stories'. But usually, in a collection of stories, there could be a variety of main characters, like a brave hero, a wise old man, or a curious child.