I needed a bounty hunter for a game I've been running, and I made the description a little more general to fit into your game. OC, please steal.
Legends surround Salt and Pepper Beard, with whispers of dark pacts and alliances with sinister forces that grant him unnatural abilities. Some say he has struck bargains with malevolent sea demons, while others claim he's mastered forbidden arts to manipulate the elements themselves. The truth remains shrouded in mystery, fueling the dread that follows in his wake.
Should adventurers cross paths with Salt and Pepper Beard, they would be wise to approach with caution and steel their nerves. This malevolent mercenary presents a formidable and feign-less foe, one whose legacy of terror stretches far and wide across the realms, and whose name is synonymous with bloodshed and death.
- from the publisher's blurb