A UAC Elite Guard OC from the Doom (Series) fanfiction Day Of Wrath (Infinitypilot).
Ruby Taylor is a tall, dark-skinned female with short brown hair and hazel eyes. Due to a demonic corruption that occurs in her story, she is frequently depicted with a demonic left arm (appearing black with red claws and spikes) and a short black horn on the right side of her head.
Her signature weapon is the experimental UAC Vorpal Sword, a black longsword with a single red edge.