Hoopa is a dual-type Psychic/Ghost Mythical Pokémon introduced in Generation VI. While it is not known to evolve into or from any other Pokémon, Hoopa has an alternate form, which it changes into by using the Prison Bottle. Its default form, Hoopa Confined, will then become the Psychic/Dark Hoopa Unbound. Hoopa Unbound in the party will revert into Hoopa Confined if three days have passed since changing to Hoopa Unbound. Other circumstances may also cause it to revert.

Hoopa Confined was officially revealed in the February 2015 issue of CoroCoro magazine. Hoopa Unbound was officially revealed in the May 2015 issue of CoroCoro magazine. Take a look below for 30 interesting and fun facts about Hoopa.

1. Hoopa Confined is a light purple Pokemon with a vaguely humanoid appearance.

2. It has green eyes with yellow sclerae, a yellow ring marking on its forehead, a small, pink dot under each eye, and dark pink hair tied into a short ponytail.

3. On either side of its head is a dark gray horn that curves slightly upward.

4. Its body has a dark pink, V-shaped marking on the chest and a small, golden spike on each shoulder.

5. Its arms are not attached to its body and instead float next to it; each arm has a small golden spike similar to those on its shoulders.

6. It has mitten-like hands and dark pink rings around each wrist.

7. In place of legs, it has a wispy tail.

8. Hoopa has three gold rings: one large one around its lower body and one hanging freely on each of its horns.

9. Hoopa Unbound is a large, bipedal Pokémon with six arms.

10. It is mostly light blue with purple fur and hair.

11. The ponytail on its head is larger and bushier and held in place by two golden rings.

12. Its hair now covers its chin, where it forms a pointed beard, and the back of its neck. 

13. The horns are less curved and have spiky purple hair around the bases. 

14. There are three gold rings on each horn: two around the base and one around the middle.

15. It has yellow eyes white sclerae, a pointed, dark gray nose, a small hole inside of the ring-marking on its forehead, and prominent fangs in the back of its lower jaw.

16. Similar to Hoopa Confined, its arms are disconnected and float next to its body. Instead of a small, gold spike the arms now have large, dark gray spikes and appear from holes along the sides of its body.

17. Each arm has three fingers with dark gray claws, a gold ring around the wrist, and a gold ring around the base. Several tufts of purple fur surround its torso and a gold ring encircles a hole in the center of its chest. Another large gold ring encircles its waist and there are small tufts of fur poking out from underneath it.

18. There is a purple stripe that widens at the knee down each leg and two gold rings around each ankle. The tips of its feet are gold and curl upward. Additionally, this form has a tail with a purple stripe along the top and an arrow-shaped tip. Hoopa Unbound is tied with Mega Gyarados as the tallest Dark-type.

19. The rings on Hoopa’s body can warp space and allow it transport items by passing them through its hoop.

20. Hoopa Unbound is said to be Hoopa’s true form and is said to have the power to bend dimensions.

21. This allows it to seize anything in the world.

22. As seen in the anime, either form can travel through its rings and Hoopa Unbound has the ability to control and summon powerful Legendary Pokémon.

23. Hoopa Confined is the only known Pokémon that can learn Hyperspace Hole, while Hoopa Unbound has its own signature move, Hyperspace Fury.

24. Hoopa Unbound is tied with Mega Gyarados and Umbreon for the highest base Special Defense stat of all Dark-type Pokémon.

25. Hoopa Unbound has the highest base Special Attack stat of all Dark-type Pokémon.

26. Hoopa Unbound is tied with Mega Gyarados for being the tallest Dark-type Pokémon.

27. Hoopa is the only Generation VI Pokémon to have different Pokédex entries between X and Y and Omega Ruby and Alpha Sapphire.

28. Hoopa Unbound is the only Pokémon with a base stat total of 680 that is not a Legendary Pokémon.

29. In Omega Ruby and Alpha Sapphire, the “mysterious rings” in mirage spots, from which Pokémon jump out when interacted with, resemble rings used by Hoopa.

30. Hoopa Confined may have been inspired by common depictions of djinn, particularly those with wisp-like tails. Its having rings around its wrists could have been inspired by the djinn in the story of Aladdin.