Ultramancer

An Ultramancer was a metallic humanoid species 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 could be seen on display in Hedgewick's World of Wonders. (TV: Nightmare in Silver)

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