Hoopa

X: This troublemaker sends anything and everything to faraway places using its loop, which can warp space.

Y: It gathers things it likes and passes them through its loop to teleport them to a secret place.

Omega Ruby: In its true form, it possess a huge amount of power. Legends of its avarice tell how it once carried off an entire castle to gain the treasure hidden within.

Alpha Sapphire: It is said to be able to seize anything it desires with its six rings and six huge arms. With its power sealed, it is transformed into a much smaller form.