Iarcho

The Iarcho were an early species destroyed by an Entity which perceived Time backwards.

History
The Iarcho were one of the earliest species in the universe. After the beginning of the universe, the Entity encountered two intelligent species which devolved into savagery, gradually becoming less sentient until all that was left was primordial ooze. It concluded that this bizarre infection was built into the nature of the Universe, and, fearing that it would be alone for all of eternity, it tried to warn species such as the Iarcho of the danger they faced. When they failed to respond to the threat, the desperate entity tried to force them to do so by presenting them more immediate dangers. The Iarcho was the first of many destroyed until the Time Lords revealed the entity's perception of time. (ST: From Eternity)