Leon's Eternatus

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Leon's Eternatus
ダンデのムゲンダイナ Dande's Mugendina
Bag Poké Ball SV Sprite.png
Leon Eternatus.png
Leon's Eternatus
Eternatus Eternamax anime.png
As Eternamax Eternatus
Debuts in Flash of the Titans!
Caught in JN127
Caught at Wyndon Stadium
Gender Gender unknown
Ability Unknown
Released in JN132
Current location Galar
This Pokémon is fully evolved.
Voice actor Japanese English
As Eternatus Unknown

Leon's Eternatus (Japanese: ダンデのムゲンダイナ Dande's Mugendina) is the fifth Pokémon that Goh caught in the Galar region, and his sixty-eighth overall. He gave it to Leon in JN127. In the past, it was known as the Darkest Day (Japanese: ブラックナイト Black Night).

In the anime


Eternatus starting the Darkest Day

Ancient people feared Eternatus and it came to be known as the Darkest Day. It was later given its proper name by Rose as an indication of the infinite amounts of Galar particles it could produce.

Eternatus first appeared in Flash of the Titans!, where it flew past a plane that Ash and Goh were riding to Galar.

In Sword and Shield: "From Here to Eternatus!", Eternatus was revealed to have been captured by Macro Cosmos and placed inside the Energy Plant core. Rose planned to strengthen it with Galar particles so it could serve as a source of infinite energy for the Galar region. In order to complete his agenda, Rose sponsored Trainers and specifically groomed Leon to become a modern-day hero figure who would ultimately subdue and catch Eternatus to ensure it could be kept as a power source. After a number of experiments in which Galar particles were injected into the reactor, Eternatus escaped from its containment field within Hammerlocke Stadium.

Eternatus and Leon

Above the stadium, Eternatus began gathering massive amounts of energy from across the region, causing many Pokémon to Dynamax and Gigantamax and go on a rampage. Leon later tried to capture it with the help of his Charizard to seal away the Gigantic Pokémon but failed, and it subsequently turned into its Eternamax form. With the help of Zacian and Zamazenta, Ash and Goh defeated Eternatus, after which they threw one of Goh's Poké Balls at it together, catching it. After it was captured, the Dynamaxed and Gigantamaxed Pokémon returned to normal. Eternatus's Poké Ball was subsequently sealed away in a safe by Professor Magnolia.

Eternamax Eternatus reappeared in a flashback in Meeting Up with the Monarch!, where Leon revealed that being powerless against it helped motivate him to grow stronger.

In JN127, it was revealed that Eternatus had been unsealed by Professor Magnolia. Alongside Leon, the two had started to work to get Eternatus used to being around people. After reuniting with its Trainer, Goh agreed that was for the best and left it under Leon's care.

In JN131, Eternatus, while being observed by Professor Magnolia at Hammerlocke's Energy Plant, reacted to the intense energy created by Ash and Leon's battle at Wyndon Stadium and escaped from its containment before flying to the Stadium. In the next episode, it stabilized the immense amount of Galar particles that had appeared around the Stadium during the aforementioned battle before flying off. As a parting gift, Eternatus recharged Ash and Leon's Dynamax Bands, allowing them to be used once more.

Personality and characteristics

Eternatus was feared by people, giving it the name of the Darkest Day. It is very powerful, easily defeating Galar's Champion and was only defeated by strong Trainers and other Legendary Pokémon. It is able to create and control Galar particles, which allow Pokémon to Dynamax. Through this, it can force or prevent a Pokémon from Dynamaxing.

Eternatus was dangerously aggressive, violently lashing at everyone around it, causing major havoc across the region. It is later revealed that it was periodically unsealed so it could get used to human contact, becoming far more docile, although Leon reveals that it lashed at him repeatedly. It is stated that Eternatus has difficulty controlling its power. When Eternatus appeared at Wyndon Stadium during the Masters Eight Tournament, it was shown to have gained control of its power and the will to protect Galar.

Moves used


Eternatus Dynamax Cannon.png
Using Dynamax Cannon
Move First Used In
Dynamax Cannon Sword and Shield: "From Here to Eternatus!"
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.

Eternamax Eternatus

Eternamax Eternatus Eternabeam.png
Using Eternabeam
Move First Used In
Eternabeam Sword and Shield... The Legends Awaken!
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.

In the manga

Pokémon Journeys: The Series

Eternatus debuted in Flash of the Titans!. It reappeared during the Darkest Day in JNM14 and faced Ash, Goh, and Leon. After being defeated by the joint action of these Trainers and Zacian and Zamazenta, Goh caught it.

Moves used


Move First Used In
Dynamax Cannon JNM14
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.

Eternamax Eternatus

Move First Used In
Eternabeam JNM14
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.

In the games

In spin-off games

Pokémon Masters EX

Main article: Leon (Masters) → Eternatus

Sygna Suit Leon forms a sync pair with Eternatus in Pokémon Masters EX.


  • Unlike other Pokémon in the anime, Eternatus is frequently portrayed with 3D rather than 2D animation.
  • Eternatus's modern-day name was coined by Chairman Rose. Previously, it shared its name with the Darkest Day event.
  • Eternatus is the first Legendary Pokémon owned by a main character or a Champion in the anime.

Related articles

For more information on this Pokémon's species, see Eternatus.

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