- Given he often has no lips, how does he even say his arch nemesis' name?
- Is that a mask or was his skin removed and skull dyed?
- Originally, it was a mask, but after the Skull originally died of old age, he moved to a clone body of Steve Rogers, which was disfigured by his Red Dust poison which caused his skin to shrivel up and turn red. He has skin, strictly speaking, it's just dried up and withered on his skull like a mummy.
Headscratchers / Red Skull