<p>To provide a robot and a robot system having higher reliability in a safety aspect. The robot is provided with a base to be fixed to an installation surface, and an arm unit having a plurality of arm bodies sequentially and revolvably coupled with each other with one end coupled to the base through a shaft. The arm unit has a stopper mechanism having a movable stopper member capable of restricting a revolving motion of the arm bodies around the shaft to a predetermined revolving range. The movable stopper member is provided to one link of one of the pairs of links coupled through the shaft, whereas the fixed stopper member, which is engaged with the movable stopper member, is provided to another link of the one of the pairs of links.</p>
