Super-ancient Pokémon

The weather trio is, for lack of a better defining characteristic of the three, the name of the legendary trio made up of Groudon, Kyogre, and Rayquaza. They are referred to in the games as the super-ancient Pokémon (Japanese: 超古代ポケモン super-ancient Pokémon), although the Japanese anime has applied this term to Fossil Pokémon as well.

Although several non-legendary Pokémon, such as Tyranitar and Abomasnow, have abilities that can alter the weather conditions, and the Golduck family is capable of having an ability that can stop them altogether, Groudon, Kyogre, and Rayquaza's abilities were the first sight of these weather-changing ones in the games. This makes them the only legendary trio not to share one universal ability.

Unlike Pokémon with moves like Sunny Day and Rain Dance, where the weather changes to another for only five turns, the abilities of the legendary trio cause their weather effect for the remainder of the battle, or until the weather is changed again in some way. Rayquaza's, however, only lasts as long as it remains active, and removes the battle effects of any weather on the field, leaving it to just be a pretty-looking environmental effect.

They do not appear to have a master, though Rayquaza seems to serve as the leader of the three internally. It was shown quelling a violent confrontation between the other two Pokémon during the events of Pokémon Emerald.

Strangely, this is the only legendary trio whose members do not all have the same base stat total; Groudon and Kyogre share a total of 670, while Rayquaza's is 680. This fits with its role as a mediator between Groudon and Kyogre.

Similar movesets

Lv.	Kyogre  Water	Groudon  Ground	Rayquaza  Dragon  Flying
Start	Water Pulse	Mud Shot	Twister
5	Scary Face
15	AncientPower
20	Body Slam	Slash	Dragon Claw
30	Calm Mind	Bulk Up	Dragon Dance
35	Ice Beam	Earthquake	Crunch
45	Hydro Pump	Fire Blast	Fly
50	Rest
60	Sheer Cold	Fissure	ExtremeSpeed
65	Double-Edge	SolarBeam	Hyper Beam
75	Aqua Tail	Earth Power	Dragon Pulse
80	Water Spout	Eruption	Outrage
Moves in bold are STAB. Moves in italics do no damage.

Base stat comparison

Pokémon	Kyogre	Groudon	Rayquaza
HP	100	100	105
Attack	100	150	150
Defense	90	140	90
Sp. Atk	150	100	150
Sp. Def	140	90	90
Speed	90	90	95
Total	670	670	680

In the games

Pokémon Ruby & Sapphire

In the Generation III Hoenn games, both Kyogre and Groudon appear in the Cave of Origin, and after the defeat of the Elite Four, the player can encounter Rayquaza at rest on the topmost floor of the Sky Pillar.

• SKyogreCaveOriginSapphire.png

  Kyogre

• RGroudonCaveOrigin.png

  Groudon

• Sky Pillar top.png

  Rayquaza

Pokémon Emerald

In the third version of Ruby and Sapphire, Kyogre and Groudon both appear in alternating caves after beating the Elite Four: Marine Cave (on Route 105, Route 125, Route 127, or Route 129) for Kyogre and Terra Cave (on Route 114, Route 115, Route 116, or Route 118) for Groudon. Rayquaza appears atop the Sky Pillar before the Elite Four, but only can be captured after the champion, Wallace, has been defeated.

• MarineKyogreCave.png

  Kyogre

• Terra Cave Groudon.jpg

  Groudon

• RayquazaSkyPillar.png

  Rayquaza

Pokémon HeartGold and SoulSilver

All members of the Weather trio can be obtained in the Hidden Tower after beating the Elite Four. Kyogre is obtainable in HeartGold, and Groudon is obtainable in SoulSilver. Once both Kyogre and Groudon are in one game, the player gets an opportunity to catch Rayquaza.

• Hidden Tower (Kyogre).png

  Kyogre

• Hidden Tower (Groudon).png

  Groudon

• Hidden Tower (Rayquaza).png

  Rayquaza

Trivia

• The colors of the three members of weather trio are the additive primary colors of light.
• Kyogre, Groudon, and Rayquaza could be references to the Biblical Leviathan, a sea monster; Behemoth, a land beast; and Ziz, a giant bird, respectively.
• Kyogre, Groudon, and Rayquaza could be references to the elemental spheres; Kyogre being the hydrosphere, Groudon being the lithosphere, and Rayquaza being the atmosphere.
• The trio may also be a reference to the Japanese movie Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack.
• No member of the weather trio has a signature move. They do, however, have "signature abilities".
• In all other trios, all members are either single-typed or dual-typed Pokémon. The weather trio is the only trio whose members do not all fall into the same category (Groudon and Kyogre are single-type, Rayquaza is dual).
• Rayquaza is the only member not to learn an OHKO move naturally.
• Kyogre is the only member of this trio to be encountered after the main story line of Pokémon Mystery Dungeon.