The Guardian of Equestria (Doom x MLP)
27 parts Complete MatureLong ago, the Seraphim granted power to the Doom Slayer that he might conquer the forces of Hell. The Doom Slayer has won, Hell lies defeated, and now he returns to the Seraphim's holy realm. His mission is not over though, he has promises to fulfill, rewards to collect, and as always, evil to defeat. Let those who would harm this sacred land tremble, for the Guardian of Equestria, has returned!
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I do not own this story, all credit does to Thule117 on FimFiction.