FriendLiner: a train that travels through time. Will its next destination be the past... or the future?

Spike the dragon couldn't help but notice strange changes in his life ever since his disastrous birthday. The once warm Twilight Sparkle has gone cold and her five friends are missing! To take his mind off of his issues, though, Ponyville is now under attack by strange future beings called Hobblers, and, thanks to a possession incident, an odd belt, and a pass given to him by a pony from a doomed future who happens to be a passenger on a time-traveling train, it's up to him to save the day!

Well, it's not all on his shoulders, anyway. The party-loving nutcase that possessed him, it turns out, activates strange powers from the belt, and together, their bond creates the powerful "Friend-O"! With extra help from the future pony, Eve Stropper, and the crew of the FriendLiner, Spike and the ensemble that he attracts are Equestria's hero, the mysterious Masked Rider!

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Friendship is Magic has, at this point, been crossed over with everything and its mother, so it didn't surprise me to learn that someone had already beaten me to the punch of crossing over FIM with Kamen Rider Den-O. Though, I guess since the other one I found crosses the Den-O characters instead of the "platform" or so, I guess it can't hurt to continue writing my version anyway.