Act 1: Curtain 1
Skull Head was Kutaro first heads in Act 1, Curtain 1.
Skulls Head is a skull with a glowing green eye
The bony noggin of some fool who defied the Moon Bear King. skulls are a dime a dozen in Castle Black and don't offer much in the way of resale value. After all, who needs a second skull? Unless they're a cerberus or something, but then they're likely to hound you for a third.
How To Find The Head
Skull Head: Given to you at the start