GR-3C is the functional counterpart to the soft, Alcantara-covered GR-3 care robot. Fourier keeps the same 165 cm chassis and 55 degrees of freedom, but swaps the touch-sensitive upholstery for an all-white, easy-to-clean shell and an LED ring head, aiming the machine at research, service and higher-risk work rather than physical companionship. The manufacturer's own configuration table shows what is traded away: no four-microphone array, no head or torso tactile sensors and no on-board voice stack, while visual recognition, tracking, teleoperation and the optional 12-DoF dexterous hand remain. A further GR-3C Ultra configuration adds a Robosense Airy LiDAR for navigation in complex spaces and drops the speaker to 5 W.