Some fun options, but I'm really enjoying how you're weaving those specific characters into your stories, and each of them seems more than a little powerful already! I reckon I'll go with one of the bodyguards instead, if you think that would be a good fit.
A tall and bulky man in his late thirties, Henry Sommers has a buzz cut and not much in the way of a moral compass. He was working passage on a cargo ship when a bar fight gone wrong triggered his arrest and imprisonment in Alexandria. A few months into a twenty year sentence, he was mysteriously released and taken into the employ of the man he calls the Boss. He's worked for The Investor ever since.