I don't know for sure as I haven't read it, but it could be the runners themselves. Maybe there's a lead runner who is the most skilled or has some special connection to the gateways.
Here are the 10 most famous runners (in alphabetic order):
1 Michael Jordan: American professional basketball players are known for their excellent physical fitness and skills.
Joe Bynum: American track and field athlete who won many track and field championships and is considered one of the greatest track and field athletes in history.
3. Bolt (Ché artur Bordwell): Jamaica track and field athletes are famous for their outstanding sprinting skills and speed.
4 Emmons: American track and field athlete has won many track and field championships and is considered one of the greatest track and field athletes in history.
5 Pierre Correia (Pele): Brazilian track and field athletes are famous for their excellent jumping skills and results.
Kobe Bryant: American professional basketball player famous for his excellent basketball skills and physical fitness.
7 Marlon Jackson: American track and field athlete has won many track and field championships and is considered one of the greatest track and field athletes in history.
8 Nadia Bolt (Na ia Biota): Jamaica track and field athletes are famous for their outstanding sprinting skills and speed.
9. Jennifer Anniston: An American actress who was a marathon runner and participated in many marathons.
10 Ray Allen: American basketball player who has won many basketball championships and is famous for his excellent shooting skills and physical fitness.
I'm not sure specifically as I haven't read the exact 'the edge of war novel'. But typically in a war - related novel, there could be a soldier as a main character. He would be facing the challenges and moral dilemmas of war.
In the 'Edge of Tomorrow Novel', the main character is Cage. He is thrust into a strange time - loop situation where he relives the same day. Rita is also a main character. She is a skilled fighter and has some knowledge about the time - loop mystery. There are other minor characters such as Cage's comrades in the military who add to the overall atmosphere and plot development of the story.
There might be other supporting characters like her family members. For example, her mother could be a character who either helps her through her difficult situation or adds to her problems. Her friends could also be part of the story, some might be true friends trying to pull her back from the edge, while others might be more like fair - weather friends. And there could be a male character, perhaps a love interest, who plays a role in her journey on the edge, either complicating her life further or being a source of support.
In many Sword Edge Novels, there is often a young and brave protagonist. For example, in 'The Sword Edge Quest', the main character is a novice swordsman named Alex. He is determined to become a great swordsman and has to face many challenges.
I'm not sure specifically as I haven't read the 'Edge of Darkness Novel' in detail. But usually, in a novel with such a title, there could be a protagonist who is likely to be a complex character, perhaps someone with a troubled past or a strong will. There might also be an antagonist who represents the source of the 'darkness' in the story.
I'm not sure who the main characters are in the 'Edge of Eternity Novel' as I haven't read it. But they could be ordinary people who find themselves in extraordinary circumstances related to the concept of eternity.
I'm not sure as I haven't read the 'Edge of War Novel' specifically. But usually in a war novel, there could be a brave soldier as a main character. Maybe a commander who has to make tough decisions.