Population of Legendary and Mythical Pokémon

The population of Legendary and Mythical Pokémon refers to how many individuals of each Legendary or Mythical Pokémon species are known to live in the Pokémon world.

In the core series games

The Legendary Pokémon can usually be obtained at most once per save file, and the Mythical Pokémon are usually available once per event, although it is still possible to obtain multiple Pokémon from trades between between games. However, in some cases, there are multiple Legendary or Mythical Pokémon of the same species either found or mentioned in-game, such as in Pokédex entries or in character dialogue, even though they may not be available to the player. Sometimes, multiple Pokémon seem to be present by comparing multiple games in the timeline. In some cases, a Pokémon is used by someone else in battle facilities, while the same species may also be available to the player in the wild.

Generation I Pokémon

Legendary birds

In Pokémon Red, Blue, Yellow, FireRed, and LeafGreen, the player can see a wild Articuno at the Route 15 gate to Fuchsia City through a pair of binoculars at any time, even after catching Articuno at the Seafoam Islands.
In Pokémon Emerald, Brandon has the three legendary birds, which are also be available during the same time period as wild Pokémon in Pokémon FireRed and LeafGreen.
- Three years later, in Pokémon Platinum, HeartGold, and SoulSilver, Dahlia has Zapdos while the three legendary birds are found as wild Pokémon in Kanto and Sinnoh.
In Pokémon X and Y, Dana has the three legendary birds while one of them is also available to the player as a wild Pokémon.
In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, the legendary birds are rare spawns, which allows the player to encounter and catch multiple of each in a single save file.
The existence of regional forms with the legendary birds Articuno, Zapdos, and Moltres implies that a trio separate from Kanto existed in an isolated peripheral population (in this case Galar) and hence formed a new species.

Generation II Pokémon

Legendary beasts

The Pokédex says about Entei: "It is said that one is born every time a new volcano appears."
In Pokémon Emerald, Spenser has a Suicune while Anabel has a Raikou, which may also be available during the same time period as wild Pokémon in Pokémon FireRed and LeafGreen.
In Pokémon HeartGold and SoulSilver, Darach has Entei which is also available to the player as a wild Pokémon.
In Pokémon Omega Ruby and Alpha Sapphire, Evelyn has the legendary beasts Suicune, Raikou, and Entei, which are also available to the player in Mirage spots.

Generation III Pokémon

Legendary giants

The legendary giants Regice, Registeel, and Regirock are located in several regions, including Hoenn, Sinnoh, Unova, and Galar.
- In Pokémon Emerald, Brandon has the three legendary giants while they are also available to the player as wild Pokémon.
- In Pokémon Omega Ruby and Alpha Sapphire, Dana has the three legendary giants while they are also available to the player as wild Pokémon.

Eon duo

The Pokédex says about Latias: "They make a small herd of only several members."
In Pokémon Emerald, Tucker has a Latias and Anabel has a Latios, which are also available to the player as wild Pokémon.
In Pokémon Omega Ruby and Alpha Sapphire, Evelyn has a Latios and Morgan has a Latias. Meanwhile, the player receives a Latias in Omega Ruby or a Latios in Alpha Sapphire.

Generation IV Pokémon

In the Sinnoh-based games, Palmer has Regigigas, Heatran, and Cresselia, which are also available to the player as wild Pokémon.
It is possible to acquire multiple Phione Eggs by breeding Manaphy or Phione with Ditto. In Pokémon Legends: Arceus, three Phione are found in Seaside Hollow, and more can be found after Manaphy is caught there.

Pokémon of Myth

In Pokémon Diamond, Pearl, Platinum, Brilliant Diamond, and Shining Pearl, the Pokémon of Myth Dialga, Palkia, and Giratina are treated as unique Pokémon who were created by Arceus at the beginning of the universe. However, in Pokémon HeartGold and SoulSilver, it is also possible to acquire a level 1 Dialga, Palkia, or Giratina in the Sinjoh Ruins event.

Generation V Pokémon

Forces of nature

In Pokémon Omega Ruby and Alpha Sapphire, Nita has the forces of nature Tornadus, Thundurus, and Landorus, which are also available to the player in Mirage spots.

Swords of Justice

In Pokémon Omega Ruby and Alpha Sapphire, Morgan has the Swords of Justice Cobalion, Terrakion, and Virizion, which are also available to the player in Mirage spots.
The Pokédex says about Cobalion: "From the moment it's born, this Pokémon radiates the air of a leader." implying its birth is a repetitive occurrence.

Generation VI Pokémon

Heatran can be of either gender, which may imply the existence of at least two individuals of their species.

Generation VII Pokémon

Prior to Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, three Type: Null/Silvally were confirmed to have been created in Alola by the Aether Foundation: one is owned by Gladion, and another was given to Elio/Selene by Gladion. The whereabouts of the third Type: Null are unknown. In Pokémon Sword and Shield, a fourth individual was created in Galar by Macro Cosmos using notes stolen from the Aether Foundation.
Solgaleo and Lunala are capable of together creating a Cosmog supposedly as their unique way of breeding but it appears they're rarely seen in the same universe at the same time, making this a rare event. In Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, two Cosmog were confirmed to exist, one stolen from Aether Paradise by Lillie, nicknamed Nebby, another one created by Nebby and a Lunala^S/Solgaleo^M found in another universe's Lake of the Moone^S/Lake of the Sunne^M. In Pokémon Sword and Shield, a third individual is found by an old lady in Freezington in the Crown Tundra, nicknaming it, Fwoofy.
The Pokédex states that Meltan live in groups, and that at the end of Melmetal's lifespan, the small shards it leaves behind will eventually be reborn as Meltan. Additionally, multiple Meltan are seen together in promotional videos.

Generation VIII Pokémon

Kubfu and Urshifu

Kubfu and Urshifu can be of either gender, which may imply the existence of at least two individuals of their species.
In The Isle of Armor, the player receives a Kubfu, while Mustard also has one. Mustard's Kubfu will evolve into an Urshifu of the form corresponding to the tower not chosen by the player.

Zarude

Zarude lives deep within dense forests in a pack with others of its kind.

Generation IX Pokémon

Paradox duo

In Pokémon Scarlet and Violet, Professor Sada^S/Professor Turo^V built a "time machine" and used it to bring two Koraidon^S/Miraidon^V to Area Zero. The first one is quirky and friendly and the second one is adamant^S/modest^V and territorial, leading them to become rivals.

Terapagos

Terapagos can be of either gender, which may imply the existence of at least two individuals of their species.
In The Indigo Disk, the player finds a Terapagos in Area Zero Underdepths and even though Terapagos can be of either gender, the only obtainable one is a Hardy male and is said to be last of its kind, implying that in the past, female Terapagos existed, but are now extinct.
The Pokédex says about Normal Forme Terapagos: "It’s thought that this Pokémon lived in ancient Paldea until it got caught in seismic shifts and went extinct."

Pokémon from multiple generations

In Pokémon Omega Ruby and Alpha Sapphire, several Legendary Pokémon from Generations I to V can be encountered from portals accessible through the Mirage spots.
In Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, the several Legendary Pokémon are used by Trainers in the Battle Tree.
In Pokémon Ultra Sun and Ultra Moon, several Legendary Pokémon from Generations I to VI can be encountered in the Ultra Space Wilds.
In the Crown Tundra, several Legendary Pokémon from Generations I to VII can be encountered multiple times in Dynamax Adventures. However, the player can only catch one of each.
In Pokémon Brilliant Diamond and Shining Pearl, several Legendary Pokémon from Generations I to III can be encountered in Ramanas Park.

In the spin-off games

Pokémon Snap

In Pokémon Snap, the Kanto legendary birds Articuno, Zapdos, and Moltres hatch from Eggs, which may imply the existence of multiple of each species. Although breeding these species is not possible in the core series games because they are in the No Eggs Discovered Egg Group, Pokémon Snap predates the introduction of the breeding mechanic in the core series games.

The Eggs of Articuno, Zapdos, and Moltres are respectively found in the Cave, Tunnel, and Volcano areas. The origin of these Eggs is not explained and no more than a single legendary bird is seen per trip. However, if the player returns multiple times to the same area, all Pokémon animations are reset at the start of each trip and therefore it is possible to see the legendary birds hatching from the Eggs multiple times over the course of the same playthrough.

Mew appears to be unique as a single Mew is found in Rainbow Cloud. Mewtwo is not seen except as the Mewtwo Constellation formed by crystals in the Cave.

Pokémon Pinball series

In Pokémon Pinball and Pokémon Pinball: Ruby & Sapphire, it is possible to catch multiple of each Legendary and Mythical Pokémon in a single playthrough.

Pokémon Mystery Dungeon series

In the Pokémon Mystery Dungeon series, most of the Legendary and Mythical Pokémon available in each game are unique. However, in addition to the regular Celebi, there is also a Shiny Celebi.

Pokkén Tournament

In Pokkén Tournament, both players can use the same Pokémon species with alternate color palettes. Therefore, two of each Legendary and Mythical Pokémon are available as fighters, including: Mewtwo, Shadow Mewtwo, Suicune, and the Switch and Arcade versions also include Darkrai.

Both players are also allowed to bring the same Supporter Pokémon to the battle. As a result, two of each Legendary or Mythical Pokémon are available as Supporters: Latios, Jirachi, Victini, Cresselia, Reshiram, Yveltal, and the Switch version also includes Mega Rayquaza, Mew, and Celebi.

Pokémon UNITE

In Pokémon UNITE, it is not possible to use the same Unite license multiple times or both Mewtwo Unite licenses in the same team. However, it is possible for both teams to have the same Legendary or Mythical Pokémon.

Pokémon Puzzle League

In Pokémon Puzzle League, Mewtwo appears to be unique. This is the only Legendary Pokémon seen in-game.

Pokémon Team Turbo

In Pokémon Team Turbo, there are 25 Pokémon species available as player characters in the racing games. They all appear to be unique, with no more than a single Pokémon of each species competing in the races. This includes three Legendary Pokémon (Kyogre, Groudon, and Rayquaza) and one Mythical Pokémon (Deoxys).

Pokémon Battle Chess

In Pokémon Battle Chess, Victini hatches from a Egg. This may imply the existence of multiple of its species, even though breeding Victini is not possible in the core series games because it is in the No Eggs Discovered Egg Group.

Pokémon Party mini

In Pokémon Party mini, there is no Legendary or Mythical Pokémon in the main gameplay, but a Celebi is seen in the Celebi's Clock feature.

Pokémon Zany Cards

In Pokémon Zany Cards, the deck includes a single card for each available Legendary Pokémon. Specifically, Articuno, Zapdos, Moltres, Suicune, Raikou, Entei, Lugia, and Ho-Oh.

Learn with Pokémon: Typing Adventure

In Learn with Pokémon: Typing Adventure, the available Legendary and Mythical Pokémon appear as bosses at the end of certain routes: Reshiram, Zekrom, Cobalion, Ho-Oh, Lugia, Terrakion, Virizion, Kyogre, Celebi, and Groudon (in addition to Serperior and Zoroark as bosses in other routes).

Although each boss Pokémon appears only once over the course of the game, it is possible to catch multiple of them in the same playthrough by finishing the same route multiple times.

Spin-off games with no Legendary or Mythical Pokémon

There are several spin-off Pokémon games with no known Legendary or Mythical Pokémon. This includes Hey You, Pikachu!, Pokémon Puzzle Challenge, Pokémon Dash, Pokémon: Magikarp Jump, Pokémon Tug of War Tournament: Absolutely Get Medal!, Pokémon Tower Battle, Eevee × Tamagotchi, the Perdue series games (Pokémon Team Rocket Blast Off, Pokémon Poké Ball Launcher, and Pokémon Seek & Find), all the e-Reader games, and most of the Pokémon.com online games.

Super Smash Bros. series

This section is incomplete.
Please feel free to edit this section to add missing information and complete it.
Reason: Can multiple instances of the same Legendary or Mythical appear at the same time from multiple Poké Balls or Master Balls? Can a Poké Ball and a Master Ball be used at the same time, releasing two instances of the same Pokémon?

In the Super Smash Bros. series, Mewtwo is the only Legendary Pokémon available as a fighter. According to Mewtwo's trophy descriptions and the character dialogue concerning the origin of Mewtwo, it is implied that both Mew and Mewtwo are unique Pokémon. However, Mewtwo has four or eight alternate color schemes depending on the game.

In this game series, any of the available fighters can appear as multiple instances in the same battle. For instance, eight Mewtwo with alternative color schemes are able to fight at the same time in the 8-Player Smash mode.

Game	Image
Melee
3DS/Wii U
Ultimate

In animation

Pokémon the Series

In Pokémon the Series, there are several Legendary and Mythical Pokémon of the same species.

Typically, when a new species of Legendary or Mythical Pokémon is introduced in the series, it is implied to be a unique Pokémon, but additional Pokémon of the same species may separately be introduced in later episodes.

Same-species Pokémon seen together

Meltan in Pokémon the Series: Sun & Moon

Occasionally, multiple Legendary or Mythical Pokémon of the same species are seen together:

In The Mystery is History, an adult Lugia is the parent of the baby Lugia named Silver.
In Pokémon Heroes: Latios & Latias, the Japanese-only introduction displays several Latios and Latias. In the end of the movie, two Latios are seen flying with one Latias.
In Destiny Deoxys, two Deoxys are seen.
In Pokémon: Mega Evolution Special IV, there is a Zygarde Core and multiple Zygarde Cells.
In Pokémon the Series: XY, the Zygarde Cores Squishy and Z2 are seen together.
In Pokémon the Series: Sun & Moon, multiple Meltan have made a number of appearances.
In Thank You, Alola! The Journey Continues!, three Shaymin appeared in their Sky Formes in addition to Mallow's Shaymin.
In Time After Time!, a pair of Celebi appear, one of whom being Shiny.

In the manga

Pokémon Adventures

In Pokémon Adventures, most of the Legendary and Mythical Pokémon appear to be unique, with the exception of two Deoxys referred to as Organism No. 1 and Organism No. 2, the Legendary birds due to their Galarian forms, and the original Legendary giants which exist in both Hoenn and Galar.

In the books

Let's Find Pokémon!

In the Let's Find Pokémon! book series, each species of Legendary and Mythical Pokémon is usually seen in several locations. However, there are no known instances of multiple Pokémon of the same species appearing at the same place, which may suggest that they are all unique Pokémon nonetheless.

Pokémon Tales

In I'm Not Pikachu!, several children are transformed into Mew and Mewtwo (as well as Pikachu) as a result of watching a Pokémon movie implied to be Pokémon: The First Movie.

In Meet Mew!, there is a group of six Mew, with one of them being a darker shade of pink.

Children transformed into Mew, Mewtwo, and Pikachu
A group of Mew

In the TCG

In the Pokémon Trading Card Game, there are several cards with the same species, including Legendary and Mythical Pokémon cards, but with different characteristics such as their HP, attacks, level, and type. There are also card variations such as Rayquaza, Rayquaza-EX, Rayquaza-GX, Rayquaza V, Rayquaza δ, and Shining Rayquaza.

In a deck, the four-card limit applies to the Pokémon cards with the same name. For instance, the player can have up to four Mew and up to four Mew ex cards in the same deck.