Cyborg Superman

In the continuity of the Legion of Super-Heroes animated series, the Cyborg-Superman is actually a robotic caretaker of the Future Fortress of Solitude and refers to Superman as its master. It is encountered when Imperiex invaded the fortress of Solitude, revealing itself to the rest of the Legion when Superman and Imperiex's forces were shrunk and teleported to a shrunk Kandor City. He explained to the Legion what happened, and that Superman forgot to wear his protective suit due to Kandor city's artificial red sun.