Olivier started playing hockey in Lyon when he was five. His parents wanted him to learn to skate, but he watched a hockey practice after his lessons when he was four and wanted to try it, so they let him the next year. He loved it like he loves basically any sport he watches or tries, and he was good at it, but he was much more into playing football - it's a much more popular sport in France and his mom was an avid fan. Some of Olivier's earliest hockey memories are being dropped off at the rink early on his dad's way to work at a bakery and walking to school from there. At 13, Olivier quit playing football entirely when his parents died and moved back to Wales with his grandmother, where opportunities for hockey were better because the SHL universe is weird. Three years later, he was drafted to Anchorage.