A raccoon is said to wear a mask because of its facial markings.
raccoon
Leonardo wears a blue mask , Donatellowears a purple mask , Raphael wears a red mask and Michelangelo wears an orange mask .
Leonardo wears a blue mask , Donatellowears a purple mask , Raphael wears a red mask and Michelangelo wears an orange mask .
Jason wears a hockey mask.
Jason Voorhees wears a goalie mask.
Gelu doesn't have a mask. He wears a helmet.
It's a metaphorical mask.
surgeon
Fijians
people.
When he's playing for slipknot he wears his mask but in Murderdolls he wears face paint
The performer/dancer wears the mask at a ritual ceremony