I was wondering, players, has your GM ever thrown an antagonist or ally at you that you loved especially? Someone you thought was well written, had an interesting personality, or was just cool?

Similarly, GMs, are there any creations you're particularly proud of?

I'm quite proud of Gregorius DuWess, an elderly noble gentleman- think of Malcolm McDowell with a ponytail. Gregorius is responsible for ensuring his family's las technology manufacturing interests go smoothly on Cantus. He's an unrepentant gunslinger though, and always keen to resolve matters of honour, taking the chance to kill business rivals in duels at every opportunity. He's also been known to slum it and hit the lower hive (or even underhive) in investigating conspiracies against his holdings. Gregorius carries four valentines with him at all times, and occasionally an assortment of other weapons.

Though he's aged a bit cosmetically, he's still extremely fit, using surgery and chem treatments to ensure he never loses his killer's edge. He's quite taken with one of the characters in the cell, the group's assassin, after she assisted him in tracking someone shipping arms stolen from his company, and again at a high society ball. He generally gets an affectionate smile from most players when he appears, with his quaint mannerisms generating some humour without turning things into a farce. And he occasionally gets the chance to be awesome enough to make them value him as an ally, without taking attention from the players, too much.

Johan Kebler- rogue Tech-Priest. The PC's have been chasing this one for awhile. In case any of my PC's are skulking around I won't go into great detail but let's just say he likes to "dabble" in Xeno-tek and has lots of similarily minded allies and people under his control. He has loads of nasty servitors and the PC's even got to face his Acro-flaqellant.

In My SoB game the party has made the acquaintance of a young Preist that works as Quatermaster for an Inquisitor with very strong ties to the Eclasticy (Strounger than Normal, she was a Sister herself once), he can find Most things, given a little notice (and a Cash Advance) just about anything. He's always looking to expand his Petty Cash Float by selling Confiscated and other wise unwanted Equipment, or to increase his invantory by buying up the same.

A Real Charmer, he's always Flirting With and Hiting On the Nuns, He's done everything but outright Propision them, but has indicated that he's in to a bit of "Kink".

He hasn't got a Name, he did have but the PC's have never bothered to ask, and I don't like the one I gave him anymore anyway

Cartel Governor Aristo Crux
This bloke is under the right circumstances a highly charismatic individual in his mid 40's that has been a part of the 8T's cartel spanning across the sector since his father and mother where in it and their parents and so on going back generations, there's nothing really unwholesome about him, he just wants to make a buck and he's very talented at making a quid or two. So he'll sell his drugs to **** well anyone he wants, from nobles to cultist to the lowest hive dreg, he's got a cut price solution to all your ills and something to make you happy. The Logicians he's got as allies make some of the finest chemical fun this side of hell and his underlings love him for the money they make and enough bribed magistratum and arbites to keep the heat off his back when trafficking his many wares. Behind it all is a shrewd tactician with sociopathic tendencies and takes great joy in hacking people limb from limb personally while his cronies drag your friends, relatives and family out into the street and hosing them down with a machinegun if you even so much as skimp him. That in of itself makes the T's the most vicious cartels in the sector with their unflinching attitude to violence and absolutely no ****ing respect for authority to the point even the malfian syndicates mind their step outside their own fetid little planet.
Course, life has taken a bit of a change for the worst lately, some random arseholes from the Inquisition showed up and blew up his stolen cargo ship (as in boat) and burnt about 3 tonnes of his latest payload, killed a lot of his people, his favourite Heretek and even had the temerity to stick an explosive collar around his best sales ladies throat and blow her up in an arbites jail cell when she refused to talk. Aristo can deal with this minor setback, its cost him a lot of money and people, he's stuck in a slam and about to be shipped back to Scintilla for extra questioning. The PC's problem is that he's too valuable to just kill. There are 100's of names, secrets and things in his brain that simply aren't going to come out easy, there is also a literal army of cartel soldiers looking to get him back (or kill him if the other cartel governors see it as expedient) and a remote as it may seem, chance that he might slip the noose give half a chance.... and if the tables are turned, their suffering will become the thing of legends at his hands.
He just doesn't understand why they won't take his money, he'd even honour it as his word is unbreakable like his will.
"Just take the money and walk, you do know who I am don’t you?"