A while back, a friend and i were discussing what we thought the puppet would look like without his mask. Basically i imagine that he has no visible mouth, and his eyes resemble the cracked center of a tree stump.
Five Nights at Freddy's © Scott Cawthon
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Can I ask why you interpreted it that way? Personally I didn't even think it WAS wearing a mask, moreso that it WAS a mask.