A robot device includes a robot and a controller. The robot includes a base, an arm body, and a plurality of actuators. The arm body comprises a multi joint structure composed of a plurality of arm elements. The plurality of actuators is configured to drive the plurality of arm elements. The controller is configured to control operations of the plurality of actuators. Each of the plurality of arm elements includes a frame member and an elastic outer skin. The frame member is configured to constitute a support structure at least for gravity. The elastic outer skin is constituted by an elastic body and arranged so as to form a surface outer skin of the arm element while covering the frame member.