Rayquaza is a dual type Dragon and Flying Legendary Pokemon introduced in Generation III. It is not known to evolve into or from any other Pokemon. It can Mega Evolve into Mega Rayquaza if it knows Dragon Ascent, but only if it is not holding a Z-Crystal. In Pokemon Omega Ruby and Alpha Sapphire, the Rayquaza featured in the Delta Episode must be caught, which requires it to eat the Meteorite, before the player can Mega Evolve any Rayquaza.

Rayquaza is the game mascot of Pokemon Emerald, appearing on the boxart of the game. It serves to end the conflict between Kyogre and Groudon when Team Magma’s leader Maxie and Team Aqua’s leader Archie awakened them.

Along with Kyogre and Groudon, Rayquaza is a part of the weather trio, serving as its trio master. In Omega Ruby and Alpha Sapphire, it plays an important role during the Delta Episode and is required to be caught there to fight Deoxys. Take a look below for 30 fun and fascinating facts about Rayquaza.

1. Rayquaza is a large, green, serpentine creature.

2. It has red-tipped, rudder-like wings on its shoulders and down its body, and similarly patterned fins on the tip of its tail.

3. Yellow ring-like symbols run across the length of Rayquaza’s body and it has an additional yellow ring on top of its head.

4. Rayquaza has two limbs with three-clawed hands, and two long, flat, horn-like structures on its head, with two shorter horns along its jawline.

5. It has small, yellow eyes with black pupils, prominent pink gums, and two discernible fangs in its upper jaw.

6. As Mega Rayquaza, its body becomes longer and gains more features. Its head becomes longer with the Δ symbol appearing on its forehead. Its eyes now contain yellow pupils and red irises, and black, tree-like markings trail behind its eyes. Its red lips and teeth become gold, and the gold lines connect to those on its lower horns, which take on a broad, triangular shape.

7. At the outer edges of its lower horns are long, golden, glowing tendrils that each extend to a green, fin-like structure; these tendrils have ring patterns that strongly resemble the yellow markings running along the length of Rayquaza’s normal form. Its two upper horns become longer with a gold line running over them in a V shape, and each upper horn has another glowing tendril that ends in a circular shape with a spike.

8. Along the length of its body are golden, glowing orbs placed where its ring patterns used to be. The chin, part of the neck, and parts of its serpentine body are changed to the color black. The fins running along its body are now marked with gold lines; the fins on its tail become entirely yellow and substantially longer. Particles stream from the long tendrils that extend from its jutting jaw; these particles can control the density and humidity of the air, allowing Mega Rayquaza to manipulate the weather. Its green hide sparkles with an emerald-like quality.

9. Inside Rayquaza’s body lies an organ that contains the same power as a Mega Stone. A Devon Corporation scientist named this organ the mikado organ. By consuming meteoroids as it flies through the stratosphere, the mikado organ will be filled with enough energy to enable Rayquaza’s Mega Evolution.

10. It is able to soothe the other members of the weather trio, even in their Primal Forms.

11. Rayquaza is said to have lived for hundreds of millions of years in the ozone layer, where it feeds on water and other particles.

12. Rayquaza is rarely seen by people; even in flight, its appearance is indistinguishable from that of a meteor. 

13. Rayquaza preys on the Minior in the Alola region.

14. Rayquaza possesses some of the strongest attack power out of any Pokémon.

15. Rayquaza is the only known Pokémon capable of learning the move Dragon Ascent.

16. It is the only member without a Primal form, instead having the ability to Mega Evolve.

17. It is the only member not to be directly sought after by a specific villainous team.

18. It is the only member that cannot learn a one-hit knockout move.

19. It is the only member that cannot learn its signature move by level-up, as it must learn it by Move Tutor.

20. It is the only member that didn’t appear in the episodes Gaining Groudon and The Scuffle of Legends.

21. It is the only member that can participate in Sky Battles.

22. Mega Rayquaza has the highest base Attack and Special Attack stats and the highest base stat total of all Dragon-type and Flying-type Pokémon.

23. Mega Rayquaza is the tallest Mega Evolved Pokémon.

24. Rayquaza’s catch rate was raised from its original value of 3 to 45 in Pokémon Omega Ruby and Alpha Sapphire.

25. Rayquaza is the only Legendary Pokémon that can be caught at a higher level than the Elite Four’s Pokémon before defeating the Elite Four. However, this is only possible in Pokémon Emerald.

26. Rayquaza was the most voted Pokémon of all pre-Generation V Pokémon in the Korean Pokémon Global Link promotion poll.

27. Rayquaza is the only Pokémon capable of Mega Evolving that does not require a Mega Stone to do so in the games.

28. Mega Rayquaza is tied with Mewtwo‘s Mega Evolutions for the highest base stat total of all Pokémon, with 780, excluding non-playable Eternamax Eternatus.

29. Rayquaza was designed by Hironobu Yoshida.

30. In the Pokémon of the Year poll held by the Pokémon Company in 2020, Rayquaza was voted the most popular Generation III Pokémon, receiving 60,939 votes. It was also the eighth-most popular Pokémon overall.