Proportions & Frame: It stands at an imposing 466 feet tall, notably taller than Godzilla. It is slightly leaner, featuring a long, blocky torso and elongated, highly articulated arms that resolve into claw-like hands designed to overpower its organic rival in melee combat. Texture & Coloration: The exterior consists of gunmetal grey and silver robotic armor plates, sculpted with dense mechanical details, exposed hydraulics, and heavy die-cast metal joints. Head & Jaws: The skull is angular with separated nostrils. The lower jaws house industrial shredders, and the mouth fully articulates to expose the A74 Proton Scream Cannon. Dorsal Plates & Tail: Square-shaped, medium-sized dorsal fins line its back and run down to a long, heavy tail. The end of the tail features a deadly, rotating drill-tipped weapon. Energy Glow: When fully charged or unleashing its power, internal vents, its eyes, and the dorsal plates glow with a vibrant neon red energy hue. MechaG cannot speak, but can communicate through roars and mechanical growls.

Head and Neck: His head is relatively small in relation to his massive body, and his thick neck leans noticeably forward. Facial Structure: His nostrils are widely separated on opposite sides of his snout, giving him a distinctly reptilian face rather than a mammalian one. He has a total of 60 small, unevenly lined teeth, with six upper teeth being notably larger and pointier. Skin and Scales: His body is covered in rough, dark grey scales. Visually, the 2021 rendering brightened his skin texture slightly compared to 2019, adding higher fidelity and definition to the cracks in his armor. Limbs and Feet: He features short, thick arms and massive, heavy feet. Unlike the flat, "elephant-like" feet of his 2014 appearance, his feet are larger and more claw-like. Dorsal Plates and Bioluminescence Classic Spine Shape: His dorsal plates are shaped like the classic, jagged maple-leaf design of the original 1954 Toho Godzilla, a change that carried over from 2019. Intensified Glow: In the 2021 film, Godzilla’s bioluminescent energy is highly active. When charging his atomic breath or issuing intimidation displays, his eyes and the entirety of his dorsal plates glow a vibrant, bright blue. The blue radiation is so intense that it visibly bleeds through the cracks of his skin and scales, making him look as if he is engulfed in blue flames. Godzilla communicates through growls, roars, and grunts.

Massive Scale: His height has more than tripled since 1973, reaching 337 feet (102.7 meters) tall with a head measuring 50 feet wide. He weighs roughly 70,000 to 90,000 tons. Aging and Facial Hair: He has a distinct, scruffy beard-like facial growth on his chin and jaw. His fur has darkened to a deeper shade of brown and features visible gray hairs, reflecting his older age. Rugged Build: Kong boasts a heavily muscled physique with broader shoulders, massive biceps, and defined abs, though he also sports a noticeably thicker, somewhat sizable gut. Posture and Movement: Unlike his more upright posture as an adolescent, adult Kong frequently shifts into a hunched, knuckle-walking posture typical of real-world gorillas and apes. Battle Scars: He retains his iconic three diagonal scars running from his left pectoral to the right side of his torso. Following his devastating clash with Godzilla in Hong Kong, he gains a severe burned gash on his back from atomic breath and a diagonal grid of four fresh claw scars slashed across his chest. Kong, being smart, uses hand gestures or roars to communication with allies.