To provide a hybrid device and a hybrid system. A hybrid device (1) according to the present embodiment is provided with an electrolytic cell stack device (2) having an electrolytic cell stack (5) provided with a plurality of electrolytic cells (4) for generating a gas containing hydrogen from a gas containing water vapor, and a fuel cell stack device (3) having a fuel cell stack (11) provided with a plurality of fuel cells (10), and is configured so that at least some of the gas containing hydrogen generated by the electrolytic cell stack device (2) is fed to the fuel cell stack device (3). A vaporizer (16) for generating the gas containing water vapor to be fed to the electrolytic cell stack device (2) is disposed near the fuel cell stack (11).