Dm Needs some world building help.

I've made my own world for my campaign its really fleshed out and there's a lot fun stuff for my player to do. My Campaign takes place in a wild west style wasteland kingdom called Nowhere where magic is outlawed and the king hoards it and subjugates anyone found guilty of spellcasting.

I want the antagonists to be present in every location in nowhere so my players have clear goals and I think so far I've done a pretty good job. The king of nowhere is the bbeg for the campaign but he has four primary enforcers.

The Duke of the North A Satyre in charge of the kings military and defending the kingdoms borders a wall surrounds the kingdom keeping spellcasters from simply escaping.

The Duke of East aka mayor of Las Vegas a tubby artificer in charge of making the kings magical weapons and equipment Las Vegas was given a special exception from the king all magical artifacts made in Las Vegas are allowed to be used as long as they stay in Las vegas. There's an underground tunnel system that work as the kingdoms biggest black market.

The Duchess of the South a druid who supplies the kingdom with food and is in charge of multiple orchards and farms she somehow keeps these farms and orchards flourishing despite having little to no water to work with... It's dark magic that's the secret.

What I need help with is the Duke of the West I have little to no idea what to do with them all I know is I was thinking I wanted them to be a bard and maybe a warforged I want to make sure they stay in theme without seeping on any of the other dukes toes.

So if you could give me some suggestions on the Duke of the West or share any other ideas you might have that could help with my roleplay id appreciate the help.