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Kenichiro Nagasaka is a pioneering roboticist whose work spans whole-body control, manipulation, and legged locomotion. His most influential contribution is the development of a whole-body cooperative force control framework for two-armed, two-wheeled mobile robots, integrating Generalized Inverse Dynamics and Idealized Joint Units to coordinate forces across all joints for simultaneous position, force, and impedance control (36 citations). In manipulation, he advanced adaptive grasping through rotational incipient slip detection, enabling robots to handle unknown objects without slipping or crushing (15 citations), and developed force-sensing forceps using Fiber Bragg Grating sensors for precise bilateral micro-operation systems (25 citations). Nagasaka also contributed to motion planning with a 3D-CNN heuristic-guided planner that accelerates collision-free pathfinding (26 citations). His work on the Tachyon quadruped robot introduced a novel series-parallel elastic actuator design, achieving high payload, robust, and dynamic locomotion (10 citations). Notably, he was a key developer of Sony’s QRIO humanoid robot, a landmark platform in bipedal locomotion and human-robot interaction. With over 100 total citations, Nagasaka’s research continues to influence force control, manipulation, and legged robotics.