Herazi

The Herazi were a species that resembled bipedal warthogs. They were involved in an intergalactic reality show, where the main race would invade a different planet every episode. They joined the show in its seventh season, after killing off the past species that ran it. However, they did not know that the previous species had also been part of the show, and thought it had only run for as long as they had been on it, namely three seasons.

Due to the Herazi's reputation as a peaceful species, and their desire to be taken more seriously, they created an entirely new species to disguise themselves as: the Zaross.

In 2007, they "invaded" Norwich, as part of the filming of a new episode for the show. Jackie Tyler was there at the time, and so called Rose Tyler and the Tenth Doctor to help. (AUDIO: Infamy of the Zaross)