They were seen amongst the other Degradations during the Dalek's occupation on Moldox. These Dalek Degradations travelled by hovering above the ground. The Dalek mutant resembled a limbless humanoid torso and was housed in a reinforced glass casing that was suspended above a regular looking Dalek dome. They had arms and energy weapons flanking them on either side. (PROSE: Engines of War)
Behind the scenes
For the video game Legacy, a pixelated sprite was made by PixelWho.