Circa 5000 BC, Phaester Osiris was ruled by Horus and Sutekh. When Sutekh started his reign of destruction, Phaester Osiris was one of the targets. Only Horus and seven hundred forty other Osirans survived the destruction of their homeworld. (TV: Pyramids of Mars) In 3985, the Braxiatel Collection funded an expedition to investigate the planet. Professor Rhukk helped discover the Horun ruins. (PROSE: Legacy) Though Phaester Osiris was eventually destroyed by Sutekh, it existed as recently as the 40th century. (PROSE: Scarab of Death, PROSE: Legacy)