[i]"I have come like this in your form, so that you may understand my presence. Perfection is absolute. You must be made perfect..."[/i]

Inspired by the [i]Space:1999[/i] season 1 episode of the same name. The associated character was portrayed by Catherine Schell, who later went on to play the shape-shifting alien character Maya in season 2.
Yes, technically this is the [i]Servant[/i] of the Guardian from the episode, but I'm invoking "Artistic License" and "Rule of Cool".

Digitally created in Krita. After battling with creating my own Pirian landscape and getting unsatisfactory results, I took a screen-capture from the episode and ran it through some filters as well as adding other colour elements.