Zeril'thin CR 1
Male personality warforged warlock 1/god knows what demon

NG living construct (if NG is a problem, I will make it CG. The demon is CE, if that's good enough).
Age 26
Height 5' 78 "
Weight 256lb.
Init +2; Senses Spot -1, Listen -1
Languages Common, language pack 3.5
AC 14, touch 12, flat-footed 12
hp 5 (1 HD)
Immune to poison,energy drain, sleep effects, paralysis,disease, nausea, fatigue, exhaustion and effects that cause the sickened condition.
Fort +0, Ref +2, Will +1
Spd 30 ft. (6 squares)
Melee heavy mace +0 (1d8)
Ranged eldritch blast+2(1d6)
invocations: baleful utterance(shatter)
Base Atk +0; Grp +0
Abilities Str 10, Dex 14, Con 12, Int 10, Wis 9, Cha 14 (warforged ability score penalties, hate it or hate it more if you're a warlock. However, with your permission, I rather not RP him as a low wis moron, chalk it up to the demon if you wish).
Action Points 5
SQ composite plating, living construct subtype,light fortification.
Feats Point blank shot.
Skills bluff +6, use magic device + 6
Possessions heavy mace , 10 torches, flint and steel, backpack, bedroll, waterskin, 2 flasks acid, 1 flask alch fire.
66gp, 8sp.
Clad in Soulsteel, forged in the flames of Khyber,what you see here is the life of a living war machine, zeril'thin.
I was born among the flames of war, blades of steel, screams of the dying. A shard of khyber is my heart, a demon my soul. Torn from the foul depths of Khyber, within it is a demon's soul, without it, I cannot live. I was forged as an engine of war, an instrument of death. No life, no meaning, created only to fight. Many have died before my foul, bloodstained hands. the demon guides my hands, I can do nothing. Those that shield me from it are uncaring, they wish me to be nothing but a tool, a weapon as any other. But I must obey the demon within, for without it, I cannot live. What, than, can be done?
Flames on the horizon, the clang of swords, the blasts from spells, all cease. Above it all is the roar of the flames, the dark force coming over the horizon, it's roaring drowning even the silent screams of its victims. Even the final embrace of death shall not greet them, as their tortured souls lie there for an eternity, their bodies never decay, but olie forever on the barren, dead land, for this is the mourning. Yet amid all this, I stand, unharmed.....why? Why have I lived, when all others have died? Why, when this war of nations, millions of good souls, and so many innocents have been slaughtered in one sweep, have I survived, shaltering this abomination within me? Yet none can answer me. I stand alone, alone with the mist.
It has been ten years. The war has been ended at last, but the price, the mourning, was too high. Yet was there anything I can do? No, there was nothing any man or god, if indeed any exist on this forsaken world, could do on that day. Yet as I stand here, I cannot help but think:Why? Why did the mourning have to happen that day? Why have I survived? Why did such a war ever need to happen and, worst of all, was it me? In the pit of my soul, I know with terrible certainty the answer to one great question, and no other. I tell you this, there is no fate more terrible than to know that you have no purpose.
Okay, first of all, soulsteel is thinaun. Zeril'thin was made from the stuff and has a large khyber shard embedded in his chest, which has a demon trapped in it. He was originally made as a sort of infinite demon-powered artillery, and was considerably effective.(Baleful utterance does quite a bit, plus your average conscript does not survive an EB). The demon had near complete control over him, but was kept in line by those who made him. He hates it and himself for what he is. After the war, he established some measure of control over the demon, and came to a sort of understanding with it.He can't survive without it, and it can't escape. The result being that they granted each other 12 hour possesion per day each of the body, plus they both get the other's powers. He is a bit lost now, as he knows for a fact that he is quite pointless, not to mention bad for the world at large. The demon acts evil, but will not actually do something whacked out, such as randomly zap people, so you needn't worry. Over all, a rather sad character, but he will change quite a bit with time.