Obviously, Naruto is one of the main characters. And Kakashi's dogs are also main characters in a sense, as the story is centered around Naruto's meeting with them.
Well, it could be that Naruto is on a mission and stumbles upon Kakashi's dogs in the middle of some sort of danger. The dogs could be protecting something important, and Naruto has to work with them to keep it safe. This would lead to Naruto getting to know their unique personalities and abilities better, and perhaps even learning some new skills from observing them.
A brave and curious Labrador named Max could be a main character. He's always eager to explore new areas of the spaceship and is the first to approach any new situation.
Since I haven't read the 'kochugunshikan boukensha ni naru light novel', it's hard to say who the main characters are. However, if we go by the title, the main character is likely to be the one who becomes an adventurer while having the role of kochugunshikan. There could also be side characters like friends, family, or colleagues who play important roles in the story, perhaps helping or hindering the main character's adventures.
The two main characters are the dogs. I can't recall their exact names at the moment, but they are the ones who are on the run throughout the story.
I don't know exactly, but it's likely that the war dogs themselves are main characters. There might also be their handlers or trainers.
Obviously, the girls and the dogs are the main characters. There could be one particular girl as the lead, like a girl named Lily, and her dog, maybe a Labrador named Max.
The two dogs are the main characters.
The main character is Marcus Holloway. He is a hacker who is at the center of the story. There's also DedSec, which is more like a group of main characters as they play a crucial role together in the story.
Aiden Pearce is the main character in Watch Dogs 1 story. He's a hacker out for revenge.
The main character is Aiden Pearce. He is a hacker who drives the story forward with his actions and motives.