Abstract: A robot is disclosed. The robot can comprise a body and an emotion-expressing system. The emotion-expressing system can comprise a touch sensor embedded within the body, a feedback generator, and a controller in communication with the touch sensor and the feedback generator. The controller can be configured to determine the emotional state of the robot based on feedback from the touch sensor, and the feedback generator can be configured to generate feedback indicative of the emotional state.

Abstract: A robot is disclosed. The robot can comprise a body comprising a curved base and a multi-directional center of mass shifter assembly positioned within the body. The multi-directional center of mass shifter assembly can comprise a weight, a first actuator drivingly coupled to the weight, and a second actuator drivingly coupled to the first actuator. Actuation of the first actuator can be configured to rotate the weight relative to a first axis, and actuation of the second actuator can be configured to rotate the weight relative to a second axis, which is transverse to the first axis. The robot can comprise an inertial measurement unit, a controller, and/or an eye movable relative to the body. The position of the eye can be adjusted by an eye actuation assembly.