The Sutekh Story
"Now begins the reign of Sutekh the Destroyer. I shall crush this miserable world and hurl it into the outermost depths of space! My vengeance starts here!"
―Sutekh[src]
Sutekh's brother Horus and the remaining 740 Osirians tracked Sutekh down to Ancient Egypt and used their powers to imprison him in a pyramid on Earth. The Eye of Horus, located on Mars, beamed a signal to suppress Sutekh's powers and hold him prisoner. The tales of the Osirians were remembered in Egyptian mythology and Sutekh was able to gain followers, like Ibrahim Namin.
In the year 1911, the archaeologist Professor Marcus Scarman discovered the inner chamber of the Pyramid of Horus, discovering Sutekh and allowing him a chance of escape. Scarman's corpse was used to construct Osirian service robots and a rocket aimed at the Eye of Horus on Mars. Though the Doctor attempts to destroy the rocket eventually suceeded, he was taken over by Sutekh's will and made to take Scarman and the Robots to Mars with the TARDIS. Though the Doctor attempted to stop them, Scarman succeeded in destroying the Eye and freeing Sutekh. Hurrying back to Earth, the Doctor was able to defeat the freed Sutekh by trapping him in a Time Tunnel for thousands of years — longer than the lifespan of an Osirian. (DW: Pyramids of Mars)