Which Hockey Masked Villain was Evil Before Jason Voorhees

My Best Bet Is Either One Of Them Creeps Wearing A Creepy Smiling Hockey mask (HM7 Cooper) From Act Of Vengeance (1970's) Or Lord Humongous Mad Max 2 (1981) (HM6 Cooper)

Isnt it saddening that Jason became the most iconic villain with a hockey mask despite not wearing it first?

Then latter on we've got That scene in National Lampoon's Christmas Vacation Where Clark Wears A HM6 Cooper Hockey Mask And Using A Chainsaw Kinda like Jason and LeatherfaceTo Cut down a ridiculously Big Tree For their Christmas And The Bank Robbers use Old NHL Hockey Masks In The Movie Heat (1995) And That Mylec Hockey mask In Shriek If You Know What I did Last Friday The 13th (2000) But The mask melts away into a lumpy ghost face mask and a Mylec jr hockey mask in the blob (1988) Where that Movie Within a Movie Is Called The Garden Tool Massacre and (Bonus) The HM6 Cooper mask is in Unmasked Part 25 (1989) And The Mylec hock In Alone In The Dark (1982) The Same Year That Jason Got his Hockey mask