Yeah I only have three charactesr in high military positions. But once way on the outer rim on a semi-isolated world, the others in a small faction, and the last I have barely seen any activity from since I joined.
Well! We could have Kat Kenrid for them. She does have some morality so she won't go around killing innocents. But she's been a smuggler, mercenary, and bounty hunter, so she's not exactly the most legal. She does use mandalorian weaponry and armor, but she has only minor training. As the armor comes from the woman who rescued her from slavery and now she takes after that woman when she died. She's actually fairly good with people, partially thanks to being a Fallen and partially because she only had words to use as a slave. She's better then most and she does have Beskar'gam but she's not an elite when compared to most mandalorians.
Rocho Krul is a Trandoshan Bounty hunter. Unlike Kat, he's both elite, and trained in the force. While technically he's close to the same age, as a Trandoshan who reaches earlier maturity, he's got FAR More experience. He used to be an imperial knight for the Fel empire which is where he got his force training (added on to what he knew by instinct) and which helped his experience. But since they've been less active he does more bounty hunting. While he does require payment, he doesn't do it for the money. But for the points of defeating targets or winning battles. The only requirement that would prevent him from killing someone is if the person hasn't directly caused an attack on others without being in danger himself first. He doesn't so much do pirate type stuff for non living targets (unless it's like a droid or is being guarded). It's mostly kill, capture, or fight.
I do have two alternative options:
Poker and Mag.
Mag would be useful cause he knows a lot of languages, knows people, and he's a Zeltron which can be used to make people feel comfortable or more willing to give information. Thing is he's currently a slave. So he'd need need to be either bought or freed and he'd basically feel loyalty to them as a result. Especially as he has nowhere else to go. Mag is admittedly a very kind person. But he's fairly naive as well and doesn't really understand he has a choice in matters. He could certainly make a good informant or spy. And since he is a big guy he'd probably make a good fighter to, but that'd take training as he hasn't done any more then throw people out of bars.
Poker: A commando droid with a considerable curious streak. Naturally, he's very skilled at combat. Ranged or close, and he can fly a ship (he has a gunship that's been altered). As most commando's he can alter his voice so he could make a spy if fully armored. He's called poker though because he has a tendency of poking things when he's curious. It's almost impulsive. He's almost hyper in personality except the moment it becomes combative. He could probably be hired or persuaded into working with them
As far as fighting against them, well, if someone else had hired Rocho or Kat to do something against them, or which they didn't like. That's possible. I think most of my other characters are too far out of the way to be seen as a problem like you said.