In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, these stones can be obtained after going to Cerulean Cave a second time, after catching Mewtwo, and then, defeating Green. Both can also be located in Pokémon Omega Ruby and Alpha Sapphire in Littleroot Town and the Pokémon League respectively. The stones could originally be found in Pokémon X and Y, respectively, after capturing Mewtwo within the Unknown Dungeon located at Pokémon Village after defeating the Elite Four and becoming the Champion. The stones necessary to cause the evolution are Mewtwonite X, which evolves Mewtwo into Mega Mewtwo X, a Psychic/ Fighting-type, and Mewtwonite Y, which evolves Mewtwo into Mega Mewtwo Y, which remains Psychic. In Generation VI, Mewtwo was given two Mega Evolutions, Mega Mewtwo X and Mega Mewtwo Y, which feature different stats and abilities. After being controlled by Giovanni, Mewtwo sets out to control the world with its own clone Pokémon. In the anime, Mewtwo serves as the titular Pokémon in Mewtwo Strikes Back and Mewtwo Returns in the former, it is revealed that Mewtwo is a genetically enhanced clone of Mew, commissioned by Giovanni. It could be found within Cerulean Cave after beating the Elite Four and becoming the Kanto Region Champion. Mewtwo originally appeared in Pokémon Red, Green, and Blue as a hidden Pokémon. Myuutsuu) is a man-made Pokémon created by scientists in the Pokémon Mansion and is a Psychic type. In the Pokémon Adventures manga, Articuno, Zapdos, and Moltres are fused into one Pokémon known as Zapmolcuno. Their names come from their controlling element and the numbers one, two, and three in Spanish: 'Arctic', referring to the geological area, and 'uno', one 'Zap', a strike associated with electricity, and 'dos', two and 'Molt', from molten and 'tres', three. In a similar vein to several other Legendary Pokémon, the Legendary Birds are part of a trio, with Lugia serving as a trio master. Each Legendary has also been shown in the anime episodes. Local legend claimed that if the three began fighting, only Lugia could calm the birds.

In the anime, all three Legendary Pokémon appear in the film The Power of One, where they reside at Shamouti Island. Galarian Articuno can be found in the Crown Tundra, Galarian Zapdos is located in the Wild Area, and Moltres can be spotted in the Isle of Armor. During the story of Crown Tundra, the Galarian Legendary Birds can be encountered at Dyna Tree Hill, which triggers a cutscene which all three flee to the three different spots in Galar. The Galarian Legendary Birds first appeared in the games Pokémon Sword and Shield in their Expansion Pass. In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, the trio are featured in their previous locations from Red, Blue, and Yellow, but can also be found roaming in the sky after the player has beaten the Pokémon League. The bird must be encountered 11 times, however, before they will retreat to the Sea Spirit's Den and become available for capture. If the player character chooses Chespin, they will encounter Articuno if they have Fennekin, they will see Zapdos and if they picked Froakie, they may catch Moltres. In Pokémon X and Y, one of the birds may be found roaming Kalos after defeating the Pokémon League, with the Pokémon depending on the player character's starter. In Pokémon XD: Gale of Darkness, the three legendary birds appear as Shadow Pokémon and are originally used by Grand Master Greevil. Pokémon Platinum featured the Legendary Birds as roaming Sinnoh after the player character defeats the Pokémon League.

Pokémon Yellow featured the trio in their previous locations, while later games featuring Kanto moved Moltres to different areas: in FireRed and LeafGreen, the Flame Pokémon was at Mt. Zapdos can be found at the Kanto Power Plant, while Moltres can be captured in Victory Road. Articuno is hidden within the Seafoam Islands. The Kantonian Legendary Birds first appeared in the games Pokémon Red, Green, and, outside of Japan, Blue Versions. The Legendary Birds ( 伝説 ( でんせつ )の鳥 ( とり ), Densetsu no Tori) are a trio of Legendary Pokémon that resemble birds, consisting of the Ice/ Flying-type Articuno (フリーザー, Furiizaa), the Electric/ Flying-type Zapdos (サンダー, Sandaa), and the Fire/ Flying-type Moltres (ファイヤー, Faiyaa). Kanto introduced four Legendary Pokémon: Articuno, Zapdos, Moltres, and Mewtwo. These Pokémon first appeared in the Kanto region and are often associated with the area. The first generation Legendary Pokémon ( 伝説 ( でんせつ )のポケモンの第 ( だい ) 一 ( いち ) 世代 ( せだい ), Densetsu no Pokemon no Dai Ichi-sedai) are the very first legendary Pokémon to be introduced in the Pokémon series. 5.1 Swords of Justice (Cobalion, Terrakion and Virizion).

Legendary pokemon sketch