Galactic Golem

The Galactic Golems are two supervillains from DC Comics, acting as enemies of Superman.

First Golem
From the birthplace of the universe, Lex Luthor gathered particles and pieces of galactic matter until he had enough to build a man. Like the legendary Golem who had been molded from clay, Luthor's man-thing was molded from galactic matter, then given a form of psuedo-life by an intensive bombardment of interstellar radiation focused by Luthor through his cosmic cannon.

Since Luthor's galactic Golem needed repeated infusions of this energy to survive, it would track down and destroy any object Luthor had filled with the energy, so the energy could be absorbed into its own body.

To this end, Luthor then secretly filled Superman with this hyper-stellar energy and sent his Golem to hunt down the Man of Steel.

Since Superman drew much of his power from Earth's yellow sun, while the Golem drew his from the stars themselves, Luthor felt that the Golem would overcome the Man of Steel.

After a long battle, the Golem turned on his creator (ironically much as its legendary counterpart did) and Luthor was forced to send him on an endless journey into deep space. Several months later, the Galactic Golem returned to Earth to continue its fight with Superman but was once again defeated.

Superman covered the Golem with molten steel over the center of Earth's magnetic pole, which when hardened and immobilized the Golem.

Second Golem
The second Galactic Golem was from the planet Daxam. It was in pursuit of Mon-El. It was sent to fight Superman, subdue him, and take Mon-El. Superman and the villain Paragon teamed up and defeated this Golem by destroying the small replica of the Daxam planet in his forehead, the power source.