Ultramancer

From Tardis Wiki, the free Doctor Who reference

A Ultramancer was a metallic humanoid species originating from one of the seven planets of the Sung Sings of Akhet. At least one member of this species attended the Festival of Offerings at the pyramid of the rings of Akhaten at least once. (TV: The Rings of Akhaten) 

Behind the Scenes

This species may be a reference to the Japanese television series Ultraman.