I'll try to draw something later, but for now:
Dude's a robot, a sad robot. See. He is one of the evil corporations latest types of killing robots. He is programmed to kill and can do nothing about it. Though he doesn't enjoy or like it. Mixed with some feelings of indifference, he also have what some of us would call a consciousness about his actions. He's just newly created and want to learn about the world, want to know why he was built, and what the purpose of the ongoing destruction around him is.
He is not what the corporation wanted him to be. He is eager to learn why this is.
He should look like a robot orginally meant to kill. If some body part or anything doesn't fit that function, it has have been built onto him by himself. He is tecnological and smart, but he doesn't have many tools to his desposal, so anything done by himself might look alittle bit amateurish, amateurish but workable.
He is a massproduced robot, but no other of his kind think the same way he does. He wants to know why. He currently lurks around in the company's ventilation system, trying to find out it's big secret.
I've tried to draw this character, but I always failed miserably. Would love to see anybody else give him a crack

Sweet. I love misunderstood killer robots.

See, he has a cape because... it's a reappropriated tarp? I was thinking that he would have two gun-arms but stole a trashed hand because he had to sneak around n' stuff. Meanwhile, the rest of his robot brethren are trying to shoot him down despite him wanting to be non-violent; so he can choose whether to sneak past them or destroy them.
My character concept (off the top of my head)
Description: A female member of an underground resistance against the freedom-stifling government of a dystopian city. Hot-tempered, she dons armor appropriated from the city's guard forces, though not so much that it impedes her freedom of movement. She wields a large railgun, but can run fast while fighting due to having nano-augmented strength.
Distinguishing physical attributes: Some scars here and there, clothing more functional than good-looking, thin and somewhat muscular. Long or short hair, wears a headband.