Chris Nilan now an antibullying advocate The former enforcer’s toughest fight was after hockey — with drug and alcohol addiction — but he has gotten the upper hand in that battle and is now an antibullying advocate ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Stan Grossfeld / Globe Staff Chris "Knuckles" Nilan spoke to students at Lakeshore Catholic High School in Ontario. The former NHL enforcer now speaks against bullying. Stan Grossfeld / Globe Staff Nilan, who grew up in West Roxbury, played 13 years in the NHL for the Canadiens, Rangers, and Bruins. Stan Grossfeld / Globe Staff Nilan suffered from substance abuse, but now says he is "clean and sober." Stan Grossfeld / Globe Staff The former NHL enforcer is now the subject of "The Last Gladiators," a documentary by Academy Award-winning director Alex Gibney. Stan Grossfeld / Globe Staff Nilan won a Stanley Cup for the 1986 Montreal Canadiens. Stan Grossfeld / Globe Staff At Saint Michael Catholic High School in Ontario, Nilan spoke as part of his "No More Bullies" tour.