Well I just stumbled over the mini on ebay, and got it for a song (six quid, roughly, including postage).
The RT rulebook stats him up as follows:
Gear:
Powered armour (I'm assuming carapace, as there's no way it's full Power Armour)
Conversion Field,
Stasis Field,
Refractor Field,
Bolt Pistol
Power Sword
3 digital weapons: hand flamer, Laspistol, Needle Pistol
Grenades:
2 blind, 2 choke, 2 haywire, 2 Knock out
1 Krak, 1 Vortex, 1tanglefoot, 1 stumm, 1 plasma
Communicator,
Bioscanner + Energy scanner
Nose filters
Photochromatic eyedrops
immune injects
infravision contacts
chemicals for the jokaero needler
porta-rack (bag of holding?)
rad counter
stimulant chemical (erm?)
syn-skin applicator (3 uses)
3 suspensors
can of web solvent
(Does he have psychic powers too?

)
And based on the stats, he'd likely have:
WS 82 (WS 5 - so hit's on a 2+ unless facing someone really nasty)
BS 83 (BS 5 - again 2+)
S 64 (strength 4)
T 66 (he's toughness 4)
I 64 (move of 4)
Ld 82 (Ld

Sg 86 (Int

Wp 87 (Wp

Nv 84 (Cl 8 - whatever that means?)
And that's the "average" inquisitor?

Supposedly inquisitors are 50% likely to be psychic, so sayeth the RT book.
I throw my hands up at this one - what possible psychic powers would our walking armoury have I do wonder.

He's part "Obiwan" though, so let's see what we've got.
Psychic powers: (gulp)
Telekinesis
Psychic Impel
Psychic Shield
Telepathy
Mind Scan
Enforce Will
Puppet Master
Mesmerism
Psi-Track
Distraction
Detection
Warp Strength
Regenerate (probably not, but jedi do have healing trances?)
Abilities?
Who knows.
Heroic, leader, and true grit immediately seem likely.
And as he's a walking apocalypse, I'm guessing lightning reflexes also.
After that, I have no idea. Feint maybe?
Acrobatic also?
Now, for my take on what is WYSIWYG with this mini (the "powersword" looks more like a gun than a sword so I'll treat it as such, unless someone here says different).
WS 59
BS 65
S 54
T 56
I 64
Ld 82
Sg 86
Wp 87
Nv 84
Right handed
Gear:
Carapace armour
Infra-goggles (those funny sunglasses)
Knife,
Knuckle dusters
(both of these because if we're discounting the "power sword" he'll need something suitably hidden)
Autopistol/Heresy-era bolt pistol with sickle mag (this could go either way, really as to which it is - but having experienced the nastiness of power armour and other assorted gubbins, I'm quite comfortable with the idea of using a bolt weapon)
"Power Sword" = ... what? It's not imperial, or at least not obviously so. Unless I guess it's an obscure one. Which leaves... Inferno pistol? Plasma Blaster? Graviton Gun (maybe not, with the new marine models) - webber? Neural Shredder? Hrud Fusil? (this last one sounds interesting) Or maybe it's just a very odd looking power sword after all?
Web solvent
PsiTracker
ReBreather
Filtration Plugs
Synskin
Poisons (for the knife):
Bloodfire
hallucinogen
choke
stun
Abilities:
Dead Eye Shot
BladeMaster
Hipshooting
Quickload
(Now, that all looks a lot more reasonable than the prior walking armoury, and relies on him actually putting himself in danger).
There's a widget round his neck that could be either a medal or the WYSIWYG of one of his energy fields. But I'm comfortable with it just being a widget, frankly. I'll entertain arguments either direction though.
So, who should Oscar Van Halen be?
Inquisitor of the Order Hereticus seems most likely.
NOT A PSYKER AT ALL HONEST. (probably).
Probably a hive-worlder, based on his sense of style, likely an unlucky Schola Progenium orphan from one of the necromunda hiver gang regiments officers.
The model is basically your standard "Private Eye" style guy, so recongregator is a reasonable philosophy. Or amalathian. Flip a coin, let's go recongregator, after starting as an amalathian but becoming disillusioned over the decades.
Likes hats. Mostly floppy wide brimmed ones. And long coats. Hates shaving. Probably has a baby face when he does.
Is terrible with shoes.
Hates most forms of drugs, except for opiates. Really hates lho-sticks. Likes amasec.
Is physically apparently in his 40s, maybe late 30s.
Knows how to deal with lower classes better than nobles, and tends to ruffle feathers when it comes to spyrers.
Erm, otherwise, not sure.
He just arrived in the post today, and I just stuck him onto a slotta-base, so no idea what else to do with him just yet.
Here's one picture:
http://store.wargamingtrader.com/system/files/imagecache/product_full/i920%20-%20Rogue%20Trader%20Flyer%20Part%20One%20Inquisitor%20%20%20%20%2013-03-30.jpgAnd an image of a painted version:
http://www.cheddarmongers.org/prod/gallery2/d/22814-2/gargole1.JPGFor now he goes into my carry case with the rest of my Inquisitor models, both 54mm and 28mm.
Maybe I'll get back to him and his background (Oscar of course) later.