From U14 through U18, Roy's two-way play made him stand out in the Victory Honda AAA program in Michigan. So much so, that when his final season ended with Victory Honda, he instantly joined the Indiana Ice in the USHL. In his brief, yet successful two years with the Ice, Roy played in 34 regular season games and recorded 12 points (5-7=12). In that second season, Roy played a crucial role in the team's journey to winning the Clark Cup, the USHL Championship, tallying six points (2-4=6) in 12 playoff games.
Following his hoisting of the Clark Cup in the spring of 2014, Roy attended The University of Michigan Tech in the fall on a hockey scholarship. Back in his home state, Roy recorded nine assists and had a plus-21 plus/minus in 36 games as a freshman. Between his freshman and sophomore year, Roy's dream of playing in the NHL became one step closer when the defenseman was drafted by the Kings 194th overall in the seventh round.