Zachary Zatara
Zachary Zatara is a fictional character in the DC Universe. Zachary is a descendant of the Homo Magi just like his cousin Zatanna and uncle John Zatara. He first appeared in "Teen Titans (vol. 3)" # 34, and was created by Geoff Johns and Tony Daniel.
Comet (DC Comics)
Though unrelated, Comet's powers are similar to those of Superman and Supergirl, including flight, super-strength, and super-speed. He also has telepathy and telescopic vision. Apparently due to the potion Circe gave him he has the might of Jupiter, the wisdom of Athena, the speed of Mercury, and the telepathic powers of Neptune. Not being from Krypton he is unaffected by Kryptonite and red suns. Also, each time a comet passes through the solar system he is in, he turns into a man. For a brief transition period, he is once again a centaur.