A dark force from another world seeks an escape from its prison - and to create an entryway into a realm of limitless magic. With lawlessness and evil spreading from one desert frontier to another, Equestria was going to need an army of Marshals.

They got one.

Well, his horse actually.

He'll have to do.

A thought experiment about how a full size cybernetic horse, who also happens to be the last of his kind, might fare in a world full of little cartoon ponies turned into a couple of random scenes, then into a story with a plot and things. Powerful magical artefacts, the biggest hand-held positronic cannon this side of the galactic core and friendships on both sides of the divide are tested as everyone tries to figure out what exactly is going on, and how to stop Stampede invading Equestria.

Maybe it'll even be a good story. It's my first, so feel free to comment/give feedback. Maybe you'll make it better for everyone else reading it

EiE: Equestroid in Equestria
A BraveStarr/MLP crossover, because best horse needs to meet best ponies. No prior knowledge of BraveStarr is expected, but you should check the show out anyway. Or watch the pilot movie or something. It's pretty awesome.
(what, no Night Guard/batpony tags? Only took six years, sheesh.)