Obsidian branded skull is bugged

Personally, I prefer it this way. Because certain pirate heads look ugly in my opinion with the default skull from the skeleton curse. For example, a pirate with a big nose and a mouth and jaw being too far behind the head makes the skull looks ugly and unnatural. Meanwhile, the reapers bones head and the obsidian arrow skull replaces the ugly variation with something more natural and with better proportions.

Obviously that's not the case with every pirate, in other instances the really thin pirates have the other side of the spectrum, where the two special skull actually look stretched and uncanny, while the other options are natural. I think this vareity is nice. To have a good idea of how your pirate will look with the skeleton curse then the spinal costume preview is ideal to know more or less how you're gonna look as a skelly. The Dark Warsmith costume and Bonechiller costumes replaces the skull with the proportional one, and the Blackheart Banshee costume hides the face. So Spinal is the most accurate to the skeleton curse proportions.