As a child, he would write the number in permanent marker and retrace it when it faded, Riko doing the same but with the number 1. Kevin previously had a number two tattooed onto his left cheekbone, it symbolized his position on Riko's 'perfect court,' and establishing that he would always be second best when compared to Riko.

He found a letter in it from his mother addressed to Tetsuji which included the identity of his father, David Wymack. Kevin found out the identity of his father by accident while he was looking through some books. The two were constantly in the limelight since their childhood, although this lead to some concern over the effect this could have on their psychological well being, it led to a widespread obsession with the pair and many considered them the future of Exy. Kevin and Riko were inseparable ever since Tetsuji took the pair in, neither of the two ever appeared alone on camera. This was in preparation for Riko's 'perfect court,' which also includes the former backliner for the Ravens, Jean Moreau, and would've included Neil had he and his mother not escaped from Baltimore. The pair had a number one and two drawn onto their cheeks from a young age, Riko being one and Kevin being two. The two spent most of their time either playing or practicing Exy, they spent so much time around the Edgar Allan Ravens that they are called the team's unofficial mascots. Tetsuji didn't care much for either of them as their guardian, his main goal was the train the two to become the best Exy players in the world. He grew up with his mother until she died in a car accident, and was then taken in by his god-father, Tetsuji Moriyama, and raised alongside Tetsuji's nephew, Riko Moriyama, in Castle Evermore. Kevin was born presumably in Ireland to Kayleigh Day.

Buzzfeed foxhole court