This is a ponification of Oberst (Colonel) Hendryk Villa, a character from the 1965 German science fiction series Raumpatrouille - Die phantastischen Abenteuer des Raumschiffs Orion (Space Patrol – The Fantastic Adventures of the Spaceship Orion). I got to confess that I haven’t actually seen the series myself, but a friend of mine is very much into it and I made this ponification as part of a birthday present for him.
 
Update: By now I listened to an audio book adaptation of the above mentioned series and funnily enough in the final episode of the first (and only) season Colonel Villa becomes a traitor. It is only because of alien mind control, but the series left the issue pending on whether or not his mind could be restored. Unknowingly I had therefore picked a rather fitting background for this character. Banishment to the moon for temporary mind control by an evil (part of the controlled one’s mind that it may be) is not unheard of in Equestria ;) 
You can find the background for this image (and use it if you want to) here. 
Here is a vector of the pony without background. 
And here is a unicorn version of the same pony.