The invention provides a robot capable of synchronizing with other robots without raising costs, a robot system, and a robot control method. The robot includes a storage portion (11) in which an operating program for the robot is stored, a main arithmetic portion (12) for analyzing the operating program stored in the storage portion, a sequencer portion (13) from which a signal from the main arithmetic portion is output, a driving portion (14) for driving the robot to which the signal from the main arithmetic portion (12) is input, and a communications portion (15) for communicating with apparatuses connected to a network. In the robot, a signal input from an apparatus connected to the sequencer portion (13) and a signal input to the communications portion (15) are input to the main arithmetic portion (12) so as to perform a calculation, and, based on the calculation, a signal is output from the main arithmetic portion (12) to the sequencer portion (13) or to the driving portion (14).