Commander Gor is a member of the Kryptonian Military Guild and was one of the 600 soldiers who responded to Brainiac's attack under Zod's direction and was trapped in Kandor until later freed by Kal-El (now known as Superman).
Gor rose in ranks serving in the Naval force, soon becoming a Commander. Just before being taken away by Brainiac, the commander heard Zod swearing to come and save them as soon as possible, an oath he firmly believed in.
World of New Krypton
Years passed, and nor Zod nor any other Kryptonian ever came to the rescue, until decades later Superman, a superhero who was actually the Kryptonian Kal-El, fought against Brainiac and won, rescuing the city of Kandor. At first, Superman kept Kandor into his Fortress of Solitude on Earth, then he finally managed to restore it to normal size, freeing the 100.000 people inside it. All the Kandorians agreed to elected Zor-El and Alura as leaders. A new leadership for the last Kryptonians was needed, and Gor was more than sure a soldier was the only one fit for that role.
Back to Kandor, Gor defeated John Stewart and Hal Jordan, 2 Green Lanterns, before facing Superman himself. Kal-El’s rage, combined with Zatanna‘s magic, was more than enough to subdue even a veteran like Gor, and he eventually lost the second battle of his life.
Powers and Abilities
Gor's Kryptonian physiology allows him to absorb radiation from the Earth's yellow sun, granting him powers that are identical to Superman's. He has superhuman stamina, heat vision, the ability to fly, x-ray vision, superhuman strength, super-hearing, super-breath (he can also chill the air as it leaves his lungs to freeze targets), superhuman speed, invulnerability, and telescopic vision.