Once Upon a Pokemon is a Once Upon a Time and Pokemon Crossover held on Tumblr.


The Enchanted Forest always had wondrous creatures living in it… There were unicorns, fairies, ogres, dragons and goblins… But for an unexplained reason, portals suddenly started opening - portals that led to a completely different world, one which was inhabited by strange new creatures - with powers that were inexplicable to the inhabitants of the Enchanted Forest. These creatures - called Pokemon - began to roam their lands, and while people were at first uncertain if the Pokemon were friendly, some sought them out - for friendship - for knowledge - for power…