Physical Description:
Mathias Coin is about as large a human specimen as most galactic travellers would see. A shade under 7 feet tall, he is doubly a freak in that his unusual height is matched by his bulk. A lifetime of soldiering and security work have left him a walking gallery of scars over his body and to a lesser extent his face. He favours a close-cropped, disciplined military haircut, but is almost never seen completely clean shaven, and his facial hair ranges randomly in length from grizzled stubble to full beard, depending how he's feeling that week.

Professional History:
The full details of Walker's checkered military career are known to no-one but himself. He has hinted with comments to acquaintances (normally when drunk) that he embarked upon a soldiering career at a very young age and saw service in armies, mercenary companies and as a solo gun for hire in nasty little local conflicts and scrub wars all over the galaxy, generally lending his services to what he considered just causes. Settling down somewhat after what he called the 'adventures' of his youth, he wandered into a position at CorSec. Initially he found that security work simply provided a chance for him indulge his penchant for a good scrap whilst enjoying better rations and accommodations than he would on a campaign, but he gradually grew to enjoy the law and order aspects of the job more and more, especially bringing down slavers and spicers, for whom he bears great distaste on some personal level.

After 10 years at CorSec, he was again gripped by wanderlust, and hopped across the galaxy in a variety of short-term security positions for a few years until eventually he found himself at Drogen Station shortly after it had thrown off Imperial occupation, and there he entered the security force.

Background:
Details of Walker's background are sketchy, and flatly contradictory rumours surround him, which have quickly made him something of a local legend around Drogen - something that the man himself has been known to encourage, since it engenders respect from his fellow officers and nervousness from the criminals he deals with. No-one knows what planet he originally comes from - some, attempting to explain his huge size, have speculated that he grew up doing hard labour on a low gravity world, while others claim he is the result of a secret super-soldier project started by the Emperor and on the run from a New Republic war crimes tribunal, while others say he was a stormtrooper that turned against the Empire and led a Rebel cell. Whatever the truth may be, Coin doesn't let on. Those who get up the nerve to directly ask him the question "where are you from, then?" are typically met with the answer "Oh, I'm from everywhere", or more often merely a dismissive grunt. It certainly seems to those who have observed him in a professional capacity - both as colleagues and criminals - that he does have a lot of contacts, presumably mostly old comrades-in-arms, seemingly all around the galaxy.

Walker has never mentioned any close family, and it is widely believed he is an orphan, but his tall stories do often include references to ex-wives - those trying to keep track believe there may have been as many as 4.

Personality:
Walker is no-nonsense. A former commander described him as "probably having been born holding the rank of sergeant", and that sentiment rings true - his is the mentality of the lifetime NCO. He is a fierce and larger-than-life man who makes an excellent friend and a terrible enemy. He doesn't suffer fools lightly, and expects the best of his men - and little from officers and other bureaucrats, who, with a few exceptions, he lumps unanimously into a single entity he dismissively calls "the brass", which he seems to regard as having been created for the sole purpose of tying him up with red tape as he tries to get on with his job. He is at heart a firm believer in military discipline and the rule of law, and takes great pleasure in making the lives of major criminals miserable - but though he could hardly be called corrupt, he has been steeped in a military life for so long now that he knows exactly how to bend the rules (and by how much), and will not generally hesitate to do so for what he considers reasons of the greater good, 'common sense', or expediency. He loves a drink, an adventure, and a good scrap, or "knocking some heads" as he calls it. In any sort of a fight he demonstrates a cool head and fearlessness bordering on nonchalance, both born of many, many years of professional experience.

Form of Dress:
Walker is virtually never seen without his enormous and battered suit of antiquated power armour. A fairly recent spray job to make the suit the right colour for the Drogen Security Forces cannot disguise the obvious patches, mended and replaced plates and mysterious "personal modifications" Walker has made to the suit, many of which have functions yet to be discovered by those other than its owner. Much like Walker himself, the exotic armour has taken on something of an aura of legend, with some going so far as to claim that it is a relic of the Mandalorian Wars. Again, Walker does nothing to dispel these rumours.

Abilities and Skills:
Walker has spent his entire adult life as a soldier, and is still walking around - testament to his skill at ranged and melee combat. He's a very good shot with nearly any projectile weapon he can lay hands on from sidearms up to fixed artillery, and his knowledge of weapons is almost encyclopaedic. First-hand experience in hundreds of boarding parties, battles, and bar fights has imbued him with a wealth of tactical ground combat knowledge. Close up, he combines elements of many different schools of fighting into his own personal style, which owes more to the liberal application of his immense size and strength than it does to any one particular martial art. While this may not be pretty, it has certainly proved effective.