Gorolox

The Gorolox were a race of alien bullies who sought conquest over easy targets. Space travels they were known across several star systems, they believed the planet Diobath was ripe for plunder when the control systems that maintained the artificial planets began to decay. When they were tricked by the Doctor who made them believe, their enemy and even bigger bullies – the Omwanar League were protecting the planet they left in a hurry. (DWA: The Sky is Falling!)