Ultramancer

An Ultramancer was a metal-cased humanoid species presumably originating from one of the seven planets of the Sun-Singers 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)

An Ultramancer was on display in Hedgewick's World of Wonders. (TV: Nightmare in Silver)

Behind the scenes

 * The subtitles of the BBC-version DVD give the name as "Ultramanta" (TV: The Rings of Akhaten)
 * The body is the Necromonger armor from the movie The Chronicles of Riddick, and was also used as the body of the Metalkind in The Sarah Jane Adventures.