Valerie

Valerie is a Hex Maniac found in Mt. Pyre in the Hoenn region who was randomized into a Worker then a School Child. She was supposed to have a 5% chance of giving out a Dusk Stone when defeated, an item required to evolve R-Ceus, but was first randomized to give out a Heal Ball instead then glitched to give out nothing. After defeating Valerie 34 times, a Dusk Stone was hacked into the bag instead.