Im thinking more like marshal then marauder... Something with both combat and social. Anything besides martial have bad cop?
Best tough guy spec
Warden has bad cop, if you want a force-using tough guy.
Enforcer, right? That one should be good at being a "tough guy".
I'd second the enforcer, keys a lot of talents off coercion and streetwise, so you can punch like a train with a DP spend(Walk the Walk). You can give advantage (lots) to your friend's social check with Loom. You know a lot , only because of your criminal background (Talk the Talk). It's the brawl to the Marshals ranged light, they both mix social and combat. The enforcer, the difference is legal/illegal and brawl/ranged (light).
Would be a good duo: Let the Marshal play 'Good Cop' with the Enforcer throwing free advantage their way via Loom. Then the Enforcer gets easy upgrades from Good Cop.
Performer is a good social combatant, mostly focused on Deception and Charm.
Skip Tracer is another decent one, although really it's only good at Negotiation
Aggressor is excellent at asking others to do exactly as he says ?
Instructor and Tactician are another couple of good social/combat specs
Then there is Makashi Dualist, for when you really want to Min/Max your Presence...