Destruction of the Pfhor Homeworld

In the Marathon 2 epilogue, it is mentioned that 10,000 years later, the Pfhor are but a dim memory, known only to a few historians and students of Earth's second colonial period. The S'pht had been nearly forgotten as well, and no man had seen a living specimen of their race since the sacking of the Pfhor system by the combined fleets of Earth and the S'pht'Kr in 2881.

Today, however, all late-model Pfhor personality constructs are based on images of Tycho's core, taken during the years he was on the Pfhor homeworld. After the Pfhor's inevitable defeat, many of these clones of Tycho still exist today on old Pfhor colony worlds.

These events do not occur in this timeline. Since, as of 2888, humans still do not know what happened on Tau Ceti, and therefore never formed combined fleets of Earth and S'Pht'Kr to sack the Pfhor homeworld in 2881.