A manipulator includes a main unit movable to a specified target position, an arm unit rotatably provided on the main unit, and a posture controller. The posture controller controls the posture of the arm unit so that a front surface of the arm unit facing forward in a moving direction of the main unit is not orthogonal to the moving direction of the main unit when the movement of the main unit is performed. The arm unit may be inclined obliquely backward with respect to a moving direction of the main unit when the main unit is moved to a specified target position.