Warren, 17 (7/15/04), spent the 2021-22 season with the Gatineau Olympiques of the Quebec Major Junior Hockey League (QMJHL), earning 5-19=24 points with a +17 rating and 52 penalty minutes (PIM) in 62 games. He also earned one assist in seven QMJHL postseason games.
The 6-5, 216-pound defenseman registered 3=4 points with a +2 rating and six PIM in 29 games with the Olympiques as a rookie in 2020-21. A native of Montreal, Warren's grandfather, Raynald Boutin, was a goaltender drafted by the Philadelphia Flyers in 1972, while his mother, Magalie, was a nationally ranked Canadian swimmer.
