Gul Rillek
Male turian
~82 (50-60 equivalent)
“You're saying that we should have let the humans take Kar'shan?” “I'm saying we should have finished the job ourselves.”
Although this venture would very much be about Gul Rillek and his goals, I don't really see him as the protagonist so much as he is the prime mover, much more G-Man than Freeman. Rillek is a wealthy Palaven-based.... I guess you could call him a combination industrialist, crime boss, and political lobbyist. He has some very... “interesting” ideas about aliens.
Rillek is a hard-line Assimilationist. According to him, most of the galaxy, from asari to krogan, are culturally degenerate, and only being subsumed into a massive new Turian Hierarchy can “fix” them. The fact that the current Hierarchy is (in his view) a watered-down puppet state of the Council is just one more obstacle to overcome, really just one more alien race to absorb or exterminate. When confronted with the Systems Alliance, he didn't see the same Borg-like nightmare the Council saw- since his idea of the ideal Hierarchy already was a Borg-like nightmare, in the humans he found a race of mechanized, militarized, red-blooded turians. Hence the idea of using the humans to accomplish his goals . They're culturally almost identical to turians, they're militarily powerful, and most importantly they have yet to suffer the “creeping sclerosis of the Citadel” that turned the real turians into simpering errand boys for the asari. Rillek is utterly convinced that when the smoke clears and the tanks have rolled through the Presidium, humans won't dominate or be dominated by turians so much as the two sides will simply merge... and then assimilate or exterminate everyone else.
This being RR, Rillek is very much Not Nice. He's not just willing to justify the means with an end- it's that the end itself is a bit suspect. He thinks the genophage was a swell idea, and wants to apply it to other species like the Vorcha that he considers to possess a warped idea of population dynamics. He considers a war with the Terminus systems “infinitely preferable to the alternative”. And for whatever reason, he really, really likes labor camps. I'd best characterize his alignment as “angry good”, with good being relative to the RR norm.
I'm not sure how powerful Gul Rillek is right now, but it's probably not very. He certainly doesn't expect governments to change within his own lifetime, and his ideas are just too weird to net him any popular support should he move around openly. He doesn't really have an army of his own- just mercs and random thugs, and I don't think that if push came to shove he could even really hire that many of those. But at the same time, I think he's passed the point where he's just building up resources, and is now actively influencing the galactic political scene. Which probably means Councillor Sparatus should just go ahead and make peace with his ancestors as quickly as possible.
Rillek is able to bring his essentially subversive politics in line with his extreme (even for a turian) nationistic and authoritarian nature only through his truly collossal hubris. Gul Rillek is firmly convinced that he is simply smarter than the Primarch, smarter than the Council, and that Only He knows what's best for the turian people and the rest of the galaxy.
In personal terms, I have surprisingly little to say about the guy. He's not particularly dynamic or charming, nor is he particularly abrasive. He's a biotic, although a very very bad one (going to have to check up on whether a turian biotic could ever be allowed to completely squander his abilities and receive no training whatsoever), has no combat skills to speak of, and has only a layman's understanding of scientific and technical fields (hence his employment of Ren).
He looks... well, he looks like a turian, although early on I decided that the right side of his face is scarred, charred, or maybe just outright synthetic. To hear Rillek tell it (he does so in person rarely, but the information is floating around somewhere), he was born into a mildly wealthy family, served as an interpreter in the turian military, and participated in a series of raids against batarian slaver operations. One such raid went disastrously wrong, and after taking a grenade at close range Gul Rillek was forced to play dead as he watched his surviving squadmates dragged off to slavery, all of which sparked his conviction that the galaxy needs to be reformed. All of the official records support that (with the possible exception of the Shadow Broker's), but after the “interpreter” part none of it's true. He worked in an office far from the Terminus, got his face mangled in some unfortunate accident (Rillek mentions a female soldier he was close to in the heroic version, and she is a real person- maybe he was injured while doing something stupid to try to impress her?!), and came into his politics entirely without direct outside influence. But politics demands a narrative, and so he produced one...
Other than that, Gul Rillek has a few quirks, mostly relating to his truly massive hubris. He never verbalizes “opinions” or “beliefs”- things simply are, because Gul Rillek is never wrong. He avoids any sort of romantic 'shipping: due to his “disfigurement”, he thinks anyone interested in him is such because of his power and influence, and does not feel comfortable participating in something that one-sided (read, the fact that he thinks he's in charge of everything makes him unable to perceive someone as freely giving consent). One way I thought of to really show the core characterization was having him, once he'd met them, actively try to maneuver Shepard and Garrus Vakarian into a 'ship, because that really gets to the core of who Gul Rillek is- supremely convinced he's right, and absolutely incapable of comprehending that some things aren't his business to mind.
Letting his titanic sense of infallibility be his undoing seems almost... cliché. I want to make him smart enough to adapt and paranoid enough to include redundancies in case he's tactically wrong, and I don't really think his hubris extends to day-to-day decision making. Rillek must be able to admit temporary defeats, listen to his advisers, accurately evaluate his opponents, and react competently to failures. I think that sometimes he proposes ideas that he deliberately knows to be bad, just to weed out the yes-men in his inner circle. He's read the handbook, basically.