Archetryxian

From Tardis Wiki, the free Doctor Who reference

Archetryxians were a race native to the planet of Archetryx. They developed temporal technology and became one of the twenty Temporal Powers who controlled time travel in the Vortex.

Although a peaceable race, the Archetryxians had a military which was more capable in situations of actual combat than Gallifrey's Chancellory Guard. (AUDIO: The Apocalypse Element)