Pony Avengers: Infinite Warfare

Pony Avengers: Infinite Warfare is a story in jakkid166's My Little Pony Series. It is the first story in this series to be primarily focused on being a crossover between MLP and another franchise, and follows the Main Six as they attempt to stop Thanos from taking over Equestria and halving its population.

Summary
Starting at the end of Avengers: Endgame, Iron Man successfully steals the Infinity Stones from Thanos and snaps his fingers, seemingly destroying Thanos and his army. However, in reality, Thanos is transported to Equestria, where he immediately "kidnapplejacks" Applejack and holds her hostage while trying to get ahold of the Elements of Harmony.

Soon after, Thanos's non-evil twin brother Ted Hanos shows up and teams up with the Main Six to stop Thanos. In the meantime, Thanos teams up with a changeling named Johnny Ling, doing whatever it takes to find the Elements of Harmony and use them to halve Equestria's population.