Colossal Mecha Robot Worm's-Eye Key Art

A colossal bipedal mecha robot walking directly toward the camera, viewed from an extreme low worm's-eye angle that emphasizes its towering scale over a city far below. Photorealistic CGI render, hyper-detailed mechanical greeble surfacing, anime-mecha influenced design (Gundam/Armored Core aesthetic), cinematic key-art quality, 8k, ultra-detailed. Color scheme: Primarily black and gunmetal-gray armor plating, with deep black joints, undercarriage, and recessed mechanical sections, accented by glossy gold armor panels on the shoulders, chest core, head crest, forearm vents, and lower leg/feet. Head/upper torso: Angular humanoid head with a sharp, blade-like gold crest/fin sweeping upward and back like a horn; narrow visor-style eyes; thick armored neck collar fused into wide, boxy shoulder pauldrons with red panel inlays and mechanical vents. Arms: Right arm raised and bent close to the torso with a clenched, heavily articulated fist, gold forearm plating and exposed black joint mechanisms at the elbow. Left arm lowered, gripping a massive futuristic rifle/cannon that hangs down toward the hip, muzzle pointed at the ground; the weapon is long, boxy, and industrial with vents and a scope/sight module. Torso: Broad, layered chest armor with a gold center core panel, flanked by black plating with white seams, cables, and mechanical detailing; midsection narrows into an armored waist/hip unit with gold hip guards. Legs/feet: Thick, heavily plated legs built for weight-bearing, white and black paneling with gold knee and ankle accents; wide mechanical feet with gold toe/heel plating, kicking up clouds of dust and debris as it steps, mid-stride pose suggesting forward motion and immense weight. Surface detailing: Dense greebling throughout - hydraulic pistons, vents, exposed joint mechanisms, panel seams, rivets, and layered armor plates - giving an industrial, battle-ready, hard surface sci-fi look. Environment/scale: Far below the mech's feet, a small city skyline and coastline are barely visible, dwarfed in scale, with dust/smoke clouds billowing around the mech's footfalls. Hazy mountains sit on the horizon. Sky/lighting: Overcast, dramatic sky filled with dense, voluminous clouds; soft, diffused daylight illuminates the mech from above/behind, creating subtle rim lighting along the armor edges while the underside stays in cooler shadow. Composition: Vertical/portrait framing, mech centered and filling nearly the entire frame from mid-thigh up to the head, camera angled sharply upward (low-angle/worm's-eye view) to maximize the sense of towering height and dominance. Mood: Imposing, powerful, ominous, epic scale - a war machine looming over civilization. Negative: "cartoonish," "flat shading," or "toy-like". Typography: at the bottom right corner "FORTRESS-G00" and below it with smaller text "prototype", both text using bold futuristic fonts. And at the bottom left of the screen, a shear watermark say "created by: Alexander Zulkarnain" using brush script like font.