You know the drill by now.
1) Guy goes to convention dressed as a character.
2) Guy buys an item from a creepy merchant.
3) Guy gets sent to Equestria as a huge ass robot.
Wait, what?!
Yes, this time the guy just so happens to go to a convention in a costume of Liberty Prime, the most dangerous man/machine/thing in the Fallout universe. Let's just hope he can get along with the ponies without anything going boom.
[Displaced Fic, if you can't tell.]
6/13/15 Edit: Featured the same day the story went up. HOW?!
Now co-authored by GameJunkie7 starting at chapter 2.