Thanks everybody! Looks like D and H seem most popular, D for looking fierce, and H for subtlety. O, R and E following closely behind. Will keep everyone's suggestions regardless.
@bcbedford Thanks mate. For sure was looking at kabuki make up when i made those. Didn't consider negative shapes at all yet, so I'm definitely going to experiment with that.
@alemja I see! Now that I look at it, I do think the gun silhouette I have on my sketch looks very angular and modern. Will most likely revamp the look and make it more gothic/steampunk as to not mislead anyone. Cheers for the feedback.