I finally designed Devisser’s lover that I keep referencing.

Nerik Loosenut was from Iron Legion, but he went deaf on one side and developed a bad twitch in his left arm so he often got told he acted like he had several screws loose. He didn’t like that too much so he killed a few of his bullies before running off to be a pirate where, upon getting a bit startled and confused loudly proclaimed he “had a few nuts loose” which made the pirate crew he’d joined burst out laughing and so “Loosenut” stuck as his name. He’s usually affectionately called “Lucy/Loosey”.