グレイ

The protagonist of this story.

He is the leader of a group of mercenaries.
His parents were killed by another race in the past, and he holds a grudge against them.
All of his fellow mercenaries are in the same situation as he is, so he has a strong sense of camaraderie with them.

Although he cannot use magic, he excels in military prowess and boasts of his one-hit attack.