Fallout: Equestria - Do Robot Ponies Dream of Electronic Bunnies is a side story written by ScottWolf. The story follows Versatile, a pre-war android built by the six ministries for an unknown purpose.
Versatile awakens two hundred years after the war, inside a pre-war stable called The Safe, hidden within Canterlot. He leaves to go exploring and discover a purpose for himself as well as track down answers regarding his creation.
Story can be read on Fimfiction.