A researcher 1.78 m tall in a sealed pale hazmat suit with a taped front seam, two flapped pockets and a waist ring, a hood with a sealing collar and a wrapped glass visor, a lit green helmet lamp, two breathing tanks on a back pack with valve collars and a pair of rubber hoses running round to the hood. He holds a glowing blue sample flask with a screw neck and a carry ring in the right hand. The face is behind the visor, so no eyes or mouth are modelled. Motion is rigid node transforms on parented joint nodes: the pelvis carries the head and both shoulders, each shoulder carries its forearm, and the right forearm carries the flask. There is no skeleton, no skin weighting and no deformation anywhere. The fingers inside the mitt, the face, the hair and the clothing are solid, and the legs are static so the feet stay planted. Dimensions 0.88 × 1.78 × 0.83 m (X × Y × Z). Metre units, +Y up, +Z front; origin on the ground at the footprint centre unless stated. Damp conifer forest realism: wet concrete and corroded corrugated steel, weathered pine, dark bark and soil, deep needle green, olive canvas, gunmetal and machined steel, with five emissive colours (amber fire, white floodlight, green status, blue screen, red warning) that also form the loot rarity ladder. Rigid node-transform clips idle, head-turn, arm-swing, weapon-raise turn named nodes on their own pivots. No skinning, no skeleton, no skin weighting, no collision or navigation data.