Background Pony #FC4A

@Background Pony #3B16

I'm almost entirely certain she is XD

She regularly defies both conventional logic and the known laws of physics, she is faster on hoof than Rainbow Dash (the fastest flier in Equestria) is in flight, she is secretly one of the smartest characters in the series, possibly even smarter than Twilight, and she is 100% aware that she’s a cartoon character.Sounds pretty Eldritch to me.