While I have plots and plans to try playing different people...

I think Martellus from Dawn of War 2 probably qualifies.

That's pretty obscure

Otherwise General Guy.

I mean, not sure which one is more obscure all told.

I'd say Martellus, but who knows.

Martellus I haven't given a real RP though, since Space Marines make for bad CR opportunities.

Even more 'progressive' and 'forward thinking' tech marines.

say that to Grimdork

What heresy is this?

Space marines are great if you take them from the Heresy era, or play them as detached deathwatch where they have to make compromises. Or just generally lone canon wolf it so they're stuck.

Well, yeah, but Martellus isn't really from either of those situations. He's a Blood Raven.