[This is a Final Fantasy legend III Crossover]
The Human rebel Dion used the bomb he asked the Doctor Beleski to implant inside of him to destroy the energy Barrier Machine, in doing so he blew himself and the machine to bits, however this hasn't the end of the heroic Dion, since the barrier machine produced enough energy to block anything, when the machine blew up, it created a wormhole taking most of Dion's blown up parts and reformed them in Equestria [Still as a human]. He lands near the CMC Clubhouse, Rainbow Dash had seen the Light from the Warp of worlds.
later on Rarity beings to get a Crush on Dion
And I forgot to mention Dion can use a Magic Spell called Morph [Allows him to take the form of whatever the main race is] [a Pony in this case]