Ood

The Ood are a fictional alien species with telepathic abilities from the long-running science fiction series Doctor Who. In the series' narrative, they live in the distant future (circa 42nd century).

Whilst the Ood initially appear as a slave race who become hostile, over the course of the stories they are shown to be a naturally peaceful race, and by The End of Time have progressed to becoming an advanced civilization which the Doctor thinks is impossible to have happened in the time span that it did (100 years from the end of their enslavement).

Read more about Ood:  Physical Characteristics, History Within Doctor Who