Ultra Beasts infrequently appear from Ultra Wormholes in Alola. These appearances are apparently as unexpected for the Ultra Beasts as it is for Alolans, which tends to make them combative. They are especially drawn to people who have passed through an Ultra Wormhole due to the Z-Power energy left on them, apparently expecting to find another wormhole they can use to return home.
When an Ultra Beast is encountered in the wild, the energy from Ultra Wormholes manifests as a red aura that boosts one of its stats at the start of battle, similar to a Totem Pokémon's orange aura. Wicke theorizes that they store this energy in their bodies.
Most Poké Balls have difficulty recognizing Ultra Beasts as Pokémon due to their extradimensional origins and thus have a catch rate modifier of 410/4096× (~0.1×) when used against them, impairing their ability to effectively catch them. However, Beast Balls are exceptions as they are specifically designed to catch Ultra Beasts and thus have a catch rate modifier of 5× when used against them, though they have a modifier of 410/4096× against Pokémon that are not Ultra Beasts. The Master Ball is also unaffected by this impairment due to its ability to catch any Pokémon without fail, even Ultra Beasts.
It slithers toward people. Then, without warning, it triggers the explosion of its own head. It's apparently one kind of Ultra Beast.
A UB that appeared from an Ultra Wormhole, it causes explosions, then takes advantage of opponents' surprise to rob them of their vitality.
Cosmog, Cosmoem, Solgaleo, Lunala, and Necrozma are thematically related to the Ultra Beasts, and share many similarities with them, although are not usually considered to be Ultra Beasts themselves. However, in some media, Necrozma is considered to be an Ultra Beast, although none of the other four are.
Noted similarities to Ultra Beasts
The disputed Pokémon are thematically related to the Ultra Beasts and Ultra Space, including the ability to create Ultra Wormholes.
In the core series games, the disputed Pokémon include a sound frequency within their cries that is also shared with all Ultra Beasts.
In Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, Professor Mohn's research for the Aether Foundation hypothesized that Cosmog may be an Ultra Beast due to it originating from Ultra Space.
In Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, Necrozma is often referred to as being similar to an Ultra Beast.
In Pokémon Sun and Moon, Looker claims "It was black and yet it was shining somehow! It was...it was like it was refracting light! It might have been a UB! No, I'm certain of it! It surely was a UB!"
In Pokémon Sun and Moon, after catching Necrozma, the following dialogue is displayed: "You caught the mysterious life-form that appeared to be an Ultra Beast..."
Necrozma's Pokédex entry in Pokémon Sun describes it as "reminiscent of the Ultra Beasts."
In Pokémon Ultra Sun, Dulse refers to Necrozma as "a creature almost like an Ultra Beast".
Ultra Necrozma's battle at Megalo Tower has its stats raised and covered in Z-Power, similar to that of an Ultra Beast. However, the aura that surrounds the Pokémon is yellow as if it were using a Z-Move rather than the typical red aura that Ultra Beasts are covered in.
In the English localization of the core series games, the term "beast" is used to refer to the Ultra Beasts as well as and Necrozma, and is also used in mythology to refer to Solgaleo and Lunala (as "the beast that devours the sun" and "the beast that calls the moon"). Notably, this ambiguity does not occur in most other languages, including Japanese.
In languages other than English and Spanish, either distinct terms are used for both, or shorthand is not used to refer to the Ultra Beasts. For example, in Japanese, different terms are used to refer to the Ultra Beasts (Japanese: ビースト beast) than to Solgaleo and Lunala (Japanese: 獣 beast).
In all languages other than English, Necrozma is never described as a "beast" at all. In the lines that refer to it as such in English, no equivalent term appears in other languages.
In the anime, the Aether Foundation, mistaking it for an Ultra Beast, gives Necrozma the code name "UB Black" (Japanese: ＵＢ:ＢＬＡＣＫUB: Black).
Distinctions from Ultra Beasts
In the core series games, these Pokémon are not considered to be Ultra Beasts. This has several functional implications:
Beast Balls do not have increased effectiveness against them, and other Poké Balls do not have reduced effectiveness against them.
These Pokémon do not display their names as ??? before being caught in Generation VII.
Unlike the Ultra Beasts, none of these Pokémon have the Ability Beast Boost.
Pokémon Duel considers all forms of Necrozma to be Ultra Beasts.
In the core series games
Unlike regular Pokémon, the Pokédex will not normally record Ultra Beasts as seen; it will only register them when they are caught. If a wild Ultra Beast is not in the Pokédex, its name will show as ??? in battle. However, Ultra Beasts used by other Trainers will display their names in battle and register in the Pokédex; specifically, this occurs for the Poipole used by the Ultra Recon Squad and the Kartana used by the Ultra Forest KartenvoyUS. Additionally, the wild BlacephalonUS/StakatakaUM encountered in Poni Grove do display their names and are registered in the Pokédex as seen even before the player catches them.
Pokémon Sun and Moon
During the main story of Pokémon Sun and Moon (as well as in Pokémon Ultra Sun and Ultra Moon), the player encounters Nihilego at Aether Paradise during their first meeting with Aether President Lusamine, when it emerges from a spontaneously appearing Ultra Wormhole. This Ultra Wormhole was later revealed to have come from the gases of Cosmog down in the basement of Aether Paradise.
During the player's confrontation with Lusamine at their return to the facility, Lusamine is revealed to have captured Nebby, uses its power to open Ultra Wormholes across the Alola region and bringing Ultra Beasts into the region; Nihilego is seen emerging from the portal near Lusamine, while BuzzwoleS/PheromosaM is seen emerging from a portal over Melemele Island and battling Tapu Koko. The player also encounters several Nihilego in Ultra Space after arriving with SolgaleoS/LunalaM and Lillie.
After the player becomes Champion, some Ultra Beasts remain at large around Alola. The player receives the Enigmatic Card from a stranger directing them to visit the motel on Akala Island's Route 8. When they enter the guest room, they will find Looker and Anabel, who invite the player to join the International Police's UB Task Force and protect the Ultra Beasts currently loose in Alola. Upon accepting, the player begins a series of missions to capture the Ultra Beasts, spanning all four of Alola's islands, each time based out of the island's motel (or the restaurant on Poni Island). In some missions, there are multiple of the same species of Ultra Beast to be captured, and in some missions they may be found at either of two locations. If the player flees from or defeats an Ultra Beast, it remains in the area and the player will still be able to find it again immediately (either at the same place or at the alternate location, if applicable). When the player is in an area where there are Ultra Beasts during a mission, the music changes from the area's normal score.
In Faba's Revenge!, Faba managed to summon another Nihilego from an Ultra Wormhole. Lusamine, Gladion, and Ash briefly battled the Ultra Beast before it took Lusamine into the Ultra Wormhole and disappeared. They were given the proper name Nihilego in The Professors' New Adventure!.
Celesteela debuted in Rise and Shine, Starship!, where Sophocles found one while camping at Bamboo Hill. He and his classmates dug it out of the ground, and although the Ultra Guardians failed to catch it due to the fact that it was rooted down, it eventually flew off back into space. Unlike other Ultra Beasts, this Celesteela had been growing in Alola for more than 200 years.
Twirling with a Bang! saw the debut of both Blacephalon and Xurkitree. Ash and his classmates first encountered Blacephalon performing during a fireworks show, thinking that it was a part of the show. The next day, they learned that it was an Ultra Beast and set out as the Ultra Guardians to capture it. However, instead of Blacephalon, they encountered a different Ultra Beast, Xurkitree. After preventing Xurkitree from feeding on electricity from a power line, the Blacephalon from the night before appeared. The two Ultra Beasts ended up in a performance showdown, each trying to outperform the other with their moves. Thanks to a distraction from the Ultra Guardians, they were able to distract, weaken, and subsequently catch the two Ultra Beasts, allowing them to be returned home.
Stakataka debuted in The Long Vault Home!, where it arrived at the Pokémon School during midnight. After several unsuccessful attempts, it later moved to another location where it was mistaken for a pedestal for Viren's statue. The statue being placed on top of it caused it to go berserk, necessitating intervention by the Ultra Guardians.
Pheromosa debuted in Beauty is Only Crystal Deep!, where it was stealing all of the Z-Crystals from Trainers throughout the Alola region. After several unsuccessful attempts by the Ultra Guardians to stop it, it was eventually defeated by Bewear, giving the Ultra Guardians the opportunity to catch it and send it back home.
Kartana debuted in Living on the Cutting Edge!, where it was cutting everything throughout the Melemele Island. The Ultra Guardians attempted to capture it, but were unsuccessful. Soon after, a meteor approached from outer space, due to a conflict between a Deoxys and a Rayquaza. The Ultra Beast eventually cut it and saved it from hitting the Pokémon School. Afterwards, it made a cut in the fabric of space, which created an Ultra Wormhole, allowing it to return home.
As revealed in The Homecoming Crown!, Mohn encountered a Shiny Nihilego after his disappearance into an Ultra Wormhole years earlier. It brought him back to his own world and used its powers to make him see it as Lillie, living with him in a small house at the Crown Tundra for years until his family found him and restored his memories. The Shiny Nihilego was subsequently invited into the family with the nickname "Lillie" and joined Gladion's team.
In the anime, Nebby was speculated to be an Ultra Beast by the Aether Foundation before its relationship to the Legendary PokémonSolgaleo was fully understood. Similarly, Necrozma, having not yet been identified as the "Blinding One" of Alolan myth, was given the codename UB Black (Japanese: ＵＢ:ＢＬＡＣＫUB: Black). In the final episode of the series, Ash recounted a story of an adventure he had with Solgaleo in an unnamed Ultra Space world, where he helped an Ultra Beast he had "never seen before", despite all known Ultra Beasts having debuted in the anime by that point.
Afterward, Nihilego captured Guzma and dragged him into an Ultra Wormhole with it. The other beasts escaped from Po Town's barrier, allowing them to wreak havoc on the rest of Ula'ula Island. Anabel and Looker arrived shortly thereafter, and while Looker went off to investigate the Ultra Beasts that broke through the walls, Anabel assisted Sun and Moon in battling a Blacephalon. Anabel attempted to capture Blacephalon, only to discover that ordinary Poké Balls do not work on Ultra Beasts. Before Blacephalon could retaliate with Mind Blown, Tapu Bulu blew it away. Afterward, while Sun, Moon, Professor Kukui, and Professor Burnet gave Tapu Bulu a Mirage Berry, Anabel speculated that there was a certain person hiding in Alola, who was capable of creating Poké Balls that would be able to capture Ultra Beasts.
A mass of Ultra Beasts later converged on Poni Island, but were fought off by Lunala, which had evolved from Nebby. Solgaleo also wanted to join the battle, but was unable to when Sun rejected its aura and refused fight alongside it. Six months after Sun and Moon had disappeared into the Ultra Wormhole at the Poni Altar, Lusamine and her Ultra Beast were shown to have taken over Poni Island. She planned to use the wormhole at the altar to travel to Ultra Megalopolis and use the Beast Balls delivered to her by a disguised Blake to capture Necrozma, which is classified as an Ultra Beast in this canon. Meanwhile, Sun and Moon were freed from Ultra Deep Sea by Lunala and the Ultra Recon Squad, who took them to Ultra Megalopolis. The city was attacked by a Stakataka, which Sun and Moon succeeded in subduing. Soon after, Lusamine arrived at the city with some Aether Foundation Employees by using Ultra Warp Ride with some Naganadel. After fusing herself with a Nihilego, she attempted to capture Necrozma. While her attention was focused on the Prism Pokémon, Sun used one of her Beast Balls to capture Stakataka.
The battle against Necrozma eventually moved to Alola, where the Trial Captains, who had tried to join the battle, were attacked by a group of Aether Foundation Employees wielding Ultra Beasts. In the meantime, the island kahunas joined forces with the guardian deities to fight the Ultra Beasts across Alola. The Trial Captains succeeded in defeating the Ultra Beasts with a series of Z-Moves, and once Necrozma had been caught by the Ultra Recon Squad, the Ultra Beasts sensed the threat to them had passed and started heading back to their home worlds through a wormhole above Mount Lanakila.
Ultra Beasts were introduced to the Pokémon Trading Card Game in the Crimson Invasion expansion as a classification of Pokémon cards. Ultra Beast cards are distinguished by a red Ultra Beast label superimposed on the card art below the HP and type. Ultra Beast GX cards have a red graphic instead of the blue graphic depicted on other Pokémon-GX cards. Similarly, Ultra Beast Tag Team GX have a red graphic as opposed to a blue one.
Every Ultra Beast Pokémon has an attack or Ability that is affected by or affects the player's and/or opponent's Prize cards. If that Pokémon is a Pokémon-, only its GX attack is affected by or affects the Prize cards.
Unlike the core series games, Dusk Mane Necrozma, Dawn Wings Necrozma, and Ultra Necrozma are Ultra Beasts in the TCG. Necrozma in its base form, however, is not.
With the exceptions of Poipole and Naganadel, all Ultra Beasts have a base stat total of 570.
In Pokémon Shuffle, the Ultra-Beast-exclusive skillBeast Power uses prime numbers for all of its activation rates. Nihilego's skill Possession and Buzzwole's skill Demolish also have prime-number activation rates, though only at max skill level.
Of all the Ultra Beasts, Naganadel learns the most moves via level up with 18, and Poipole learns the fewest with 14.
The Ultra Beasts, Cosmog, Cosmoem, and the light trio all share a unique sound frequency found in their cries, approximately 1.25 seconds in duration. This may reflect their connection to and natural origin from Ultra Space.
Buzzwole, Xurkitree, and Guzzlord's Ultra Sun Pokédex entries and Pheromosa, Celesteela, and Kartana's Ultra Moon Pokédex entries all have exactly the same text: "Although it's alien to this world and a danger here, it's apparently a common organism in the world where it normally lives." They are the only Pokémon in the games to share Pokédex entries with each other.
In Generation VII, if the player chooses to filter out people seeking Legendary or Mythical Pokémon on the Global Trade System, people seeking Ultra Beasts will not be displayed. In Pokémon HOME, the filter originally only filtered out Mythical and Special Legendary Pokémon and did not filter out Ultra Beasts and non-Special Legendary Pokémon; however, in the v1.2.1 update, the filter was renamed to "Include people searching for Legendary, Mythical, and other special Pokémon" and was expanded to cover all Legendary Pokémon and Ultra Beasts.
Prior to Generation IX, the Ultra Beasts belonged to the "sublegendary" category in the games' code.
In a Pokémon Sword and Shield online competition called "Mythical Melee" that claimed to restrict players to the use of only Legendary and Mythical Pokémon, Ultra Beasts were allowed to participate.
In GOTCHA!, the Ultra Beasts are shown as silhouettes alongside the rest of the Legendary Pokémon.
Both groups consist only of Pokémon that cannot evolve in the first set of games they appear in.
Both play a role in the main story of their debut games.
Both groups consist entirely of gender unknown Pokémon in the No Eggs Discovered Egg Group, thus being unable to breed.
Both are connected to the mascot Legendary Pokémon of the games they were introduced in.
Both have base stats themed around a certain type of number, with the ancient Pokémon having odd-numbered base stats and all future Pokémon have even-numbered base stats, while Ultra Beasts have base stats themed around prime numbers. Additionally, the levels they learn moves at are themed around numbers, with Paradox Pokémon learning moves around multiples of seven, while Ultra Beasts learn moves around prime numbers.
The majority of Pokémon in both groups have a base stat total of 570.
Every Ultra Beast and Paradox Pokémon (except Koraidon and Miraidon) has an Ability that boosts its most proficient non-HP stat.
Promotional material for both groups' debut games did not refer to them as Pokémon or reveal any of their types prior to the games' releases.
Characters in the games are initially unsure whether the members of either group are actually Pokémon.
↑Wicke, Pokémon Sun and Moon: "There are also Pokémon on our planet that possess this same kind of energy. I think you know what I mean. The so-called Totem Pokémon that you faced in your trials."
↑Pokémon Sun and Moon: "Cosmog is hypothesized to be a type of Ultra Beast that hails from another dimension. A dimension that we have named Ultra Space. - Aether Report: Cosmog
↑Multiple characters will refer to Ultra Beasts, specifically Nihilego as "beast" or "beasts", e.g. Pokémon Sun and Moon: "There should be plenty of beautiful beasts appearing all around Alola as we speak!" - Lusamine
↑Lillie, Pokémon Ultra Sun and Ultra Moon: "But what are we to do now? It seemed to me like that beast...like Necrozma was also suffering somehow... It seemed to hurt it, to be without its light..."
↑In the book The Light of Alola in Pokémon Sun, Moon, Ultra Sun, and Ultra Moon, Solgaleo is referred to as "the beast that devours the sun" or "beast of sun", while Lunala is referred to as "the beast that calls the moon" or "beast of moon".
↑A book in Malie Library states "The pillager took from us the beast that devours the sun, using the beast as its own Dusk Mane." in Ultra Sun; in Ultra Moon it says "The pillager took from us the beast that calls the moon, using the beast as its own Dawn Wings."