Calvin grew up in the Empire of Man. His family was a family of Legionnaires. Every Mars was exceptionally good at combat. He was also taught the Canon faith. They were big on the beliefs of the Canon. Calvin was exceptionally good at combat among the Mars. Calvin always had a natural grasp of combat. And because of him being a highlander, he had a naturally muscular physique. Which helped him fight off bandits growing up. And now Calvin is hoping to one day become a Legionnaire of the Empire of Man like his father before him.