a masterpiece rough color pencil sketch of a dark, edgy, and menacing cyberpunk antiheroine, depicted from the waist up, with a fit, athletic physique, wearing a sleek black cropped tank top in a fitness style, showcasing her toned right arm and aggressive, villainous, organic mechanical left arm armor, with black, metallic, and neon-lit details, her long hair styled in a high ponytail that cascades down her back, with a few loose strands framing her heart-shaped face, serious expression, and intense, brooding eyes, with visible bloody scars on her stomach, set against a dark, misty night cityscape background with towering skyscrapers, neon lights, and a sense of foreboding, with visible pencil marks and blended colors, evoking a sense of dark energy and intensity, in a bold, sketchy style reminiscent of Sketch, with a predominantly dark color palette accented with neon hues, pencil marks, and paper texture.