Very good stories.

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  Oskar Osäker: True Omnivore [Prototype 2]/MLP crossover. One of Alex Mercer's Evolved gets sent to Equestria, stricken with an obsession with security, can this untrusting being ever find peace if he does not allow himself to? by Legionary 228,902 words · 1,801 · 61
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  Cuatro How can one feel empty in a world full of friends? by Dirty Bit 177,781 words · 1,658 · 67
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  Dimension Jumper Dimensional Explorer Sarah Jordan is trapped in a land filled with Nightmare spirits, wooden wolves, and ponies. by redtau 169,791 words · 506 · 34
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  Foal Necromancer A designated villain finds himself in equestria and his paranoia runs rampent, scaring the locals. by Kytranis 122,386 words · 3,428 · 100
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  The Nautilus Protocol Twilight wakes up to find herself trapped in an alien research facility and must find some way to escape! by Knight Breeze 73,900 words · 727 · 34