The Killing is undead, unliving, forever tormented by his own existence, arisen by his master Satan, he beholds no one but himself and his leader, he used to be a mere villager, a simple farmer, until Satan set out, zombies invaded his home, devoured his family, and bit him.
He soon passed out, only to awake in the Nether, surrounded by nothing but nothingness itself. He felt power, but at the same time weak, if only he could go back to sleep, to dream, to live again. No. He can't feel. He can't see. All he can do, is suffer, cause suffering, he stands up, attempting to use his hearing to guide him. All he hears are screams, of terror, of pain, have others been put through the same trauma as him? No. All he hear's are his own memories, his family in tears, dying, being torn apart, he, unable to do anything about it.
He hears a voice, a young girls voice, a familiar voice, she's short and quiet, she mutters at him that he must leave, he questions how, she just stares at him, he tries to get up, only to feel more pain, disabled by his or sorrow he is unable to move, he asks the little girl again, she responds with a mutter, "What?" he says, she just fades into nothingness.
He get's up, the girl is his only means of survival, who is she, why is she here? He wanders on only to stumble into a wall, it's rough and stiff. What is the wall he wonders, so many questions, the pain. He looks both ways, it never ends in sight. he hears a voice, a deep voice, telling him to follow the wall, "Why?" he asks, no response. So he follows the wall, eventually coming to what feel like a door, he goes through, he hears the voice again "Keep walking.", so he does.
He feels a sensation, he wonders what it is, only to realize. "Portal!", he thinks, seconds later he feel the cold, soft grass at his feet, he looks up, his family, they're dead. He see their corpses stacked on the ground, the pain. The suffering. He feels HATE, far to the horizon he sees the zombies, he feels another sensation, power, flowing through him, he gets up, and runs. He goes to the zombies, releases his pain. He looks up, only to see a puddle, a mesh of scattered zombies. His mission. Exact his revenge on the zombies. He is The Killing.