Hoopa is forever bound to its bottle, only allowed to keep its power for three days. Afterward, Hoopa’s power returns to the Prison Bottle and hides somewhere new in the world. Hoopa will do anything to find it again, granting the most ridiculous requests you can think of.

Hoopa’s rings could bind any Pokémon stuck inside them to its service. It would force even legendary beasts to steal and battle for its own whims. Humans tricked Hoopa into binding itself by stealing a bottle of its own essence.