This particular villain is that of a Female Pirate captain, who, after coming across a powerful equestrian artifact, attempted to use it for her own gain (much like the other EqG antagonists). This resulted in the magic becoming corrupted and her, her ship and her crew being "cursed" as the magic consumed her. Sightings of her ghost ship tend to be aggressive and hostile in nature. Her decaying ship opening fire on ships or coastal towns and sometimes sinking said ships in the process. She has become somewhat of a danger to the local coast guard, who have already lost several patrol ships to her.
Also wondering anyone has attempted to draw what a EqG Human's skeleton looks like. until now, i've only seen pony skeletons