Metatraxi were an insectoid species.
The Metatraxi were evolved by their own planet, Safenesthome, as a way of fighting back the Grub. They were ideally suited to the planet, as they spent so much time going to other worlds fighting wars that they never used enough of the planet's resources, which was the original reason the Grub had to leave in the first place. (AUDIO: Earth Aid)
The Metatraxi would take their enemies to huge arenas, where they would taunt their enemies to death. This would involve a leading Metatraxi heavily insulting the individual they were taunting, getting incredibly personal and playing on all their darkest fears and personality faults. The Seventh Doctor was subjected to one of these ordeals. (AUDIO: Earth Aid)
Behind the scenes Edit
They were later set to appear in Earth Aid, a TV script written by Ben Aaronovitch for the Seventh Doctor in the cancelled Season 27. In this story, they would have been seen to be forcing their enemies through all methods, particularly bargaining, to take a weapon, as a problem in their mental complex was that they could not harm un-armed opponents. They later appeared in the audio version of the same story which was produced by Big Finish Productions as part of their The Lost Stories range of audio stories.