Apptronik is focused on designing and developing bleeding edge technologies to empower the next generation of robotics. We specialize in developing compact series elastic actuators (SEA) that are highly efficient, power dense, and robust. In addition, we are world leaders in the integration of these actuators into robotic systems (e.g., humanoid robots) that are controlled using multi-input-multi-output feedback controllers such as Whole Body Operational Space Control (WBOSC). We are pushing the boundaries of robotic actuation technologies with the aim of making legged robots practically useful and reliable. We draw upon our past mechatronic and control software contributions for advanced legged robots including NASAu2019s Valkyrie humanoid robot and Mekau2019s Hume point foot biped.