brad marsh
Yes he was the last NHL player, playing without a helmet. See: http://www.oilersheritage.com/history/dynasty_players_craigmactavish.html
Craig MacTavish.
Brad Marsh
Craig MacTavish was the last "bare-headed" NHL player. He retired after the 1996-97 season and is currently the head coach of the Edmonton Oilers.
brad smith
I have no idea who the last five players were, but the very last one was Craig MacTavish, who is the current head coach of the Edmonton Oilers. His last season was with the St. Louis Blues in 1996/97. When he retired at the end of that season he was the last player to not wear a helmet.
Bob Montgomery , Boston Red Sox 1979
In 1988/1989 season, Ron Dugay was still not wearing a helmet. I believe he was the last King player to do so. The next year Dugay played for the San Diego Gulls so if it was not him it would have to be after that season.
Willi Plett, Brad Smith, Guy Lafleur
Inheritor, the last rank in the game. The last helmet, the Haunted Helmet, is the Pilot Helmet with a skull on it. To unlock it, you must reach the rank Inheritor, and own every BASE helmet in the game.
I'm quite sure it was Al Secord in 1983.