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Kyong-Sok Chang is a pioneering figure in human-centered robotics, whose work bridges the gap between autonomous machines and the complex, unstructured environments of everyday human life. His research focuses on interactive haptic simulation, operational space dynamics, and the development of robust control strategies for humanoid robots. Chang’s foundational contributions include efficient recursive algorithms for computing the operational space inertia matrix in branching robotic mechanisms—work that has garnered over 14 citations per paper and remains essential for multi-point robotic control. He is perhaps best known for leading Team SNU (Seoul National University) in the 2015 DARPA Robotics Challenge Finals, where his team’s innovative system architecture and controllers on the THORMANG humanoid platform earned international recognition. His papers on the DRC, with up to 28 citations, detail key lessons in enhancing robot capability under real-world constraints. With over 190 total citations across his most-cited works, Chang’s research continues to shape the future of robots that can safely and effectively interact with people and their environments.