Ash's Muk

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Ash's Muk
サトシのベトベトン Satoshi's Betbeton
Poké Ball
Ash Muk.png
Muk smothering Ash
Debuts in Sparks Fly for Magnemite
Caught at Gringey City
Gender Unknown
Ability Unknown
Current location At Professor Oak's Laboratory
This Pokémon has not evolved.
Voice actor Japanese English
As Muk Unshō Ishizuka Michael Haigney (4Kids)
Tom Wayland (TPCi)

Ash's Muk (Japanese: サトシのベトベトン Satoshi's Betbeton) was the ninth Pokémon caught by Ash during his travels through Kanto.



Ash's Muk in its debut

Ash caught Muk in the episode Sparks Fly for Magnemite. Ash and his friends were traveling through Gringey City, which was in the midst of a power failure. The local power plant was being overrun by the mysterious Template:Type2 Pokémon, Grimer. After the swarm was located, the Grimer's leader, a Muk, came and challenged the Trainers. However, the vast numbers of Magnemite and Magneton in the city combined attacks to clear out the Grimer, leaving only Muk. With the aid of Pikachu and a Magnemite that was following it due to an electrical build up, Ash defeated and captured the Muk. It was then immediately sent to Oak's lab because its stench was so rancid that it could seep through the Poké Ball. However, Muk's horrid smell seemed to have disappeared in later episodes as neither Ash, nor anyone around him, was affected by it.

Muk's first battle was in The Fourth Round Rumble, in which it was selected for use in the Indigo Plateau Conference. After Jeanette Fisher's high-level Bellsprout had trounced Bulbasaur and Pikachu, Muk made a surprise appearance as Ash's third Pokémon. Muk easily absorbed Bellsprout's physical moves and Razor Leaf and then simply smothered Bellsprout with Body Slam, winning the match for Ash.

Ash's Muk easily absorbing attacks

Muk was briefly called in The Mystery Menace, where Ash used Muk to help him and Tracey find Misty, Togepi and Bulbasaur, kidnapped by a giant Bulbasaur in a sewer. Muk and Kingler also offered to fight for Ash in the Orange Island Championship battle against Drake in Hello, Pummelo!, but Ash chose Tauros instead.

Ash's Muk showing affection for its Trainer and Oak

Muk was reunited with Ash when he returned home in A Tent Situation. Muk insisted on fighting Team Rocket, and Ash ordered it into battle instead of choosing Bulbasaur. Muk managed to resist Razor Leaf attacks from James's Victreebel, and showed off its newly learned Poison Gas when it bit down on it in an attempt to use PoisonPowder. Lickitung's Lick was even less effective, wiping Muk's face ineffectively to the point of causing pleasure instead of damage. It was then put to sleep by Sleep Powder, but awoke after Gary Oak intervened and drove Team Rocket away.


Muk has only ever fought in one other major battle, when Ash called it up from Oak's Lab in Can't Beat the Heat!, along with Heracross, Tauros and Snorlax in order to fight Gary in the Silver Conference. It was sent out originally to fight Blastoise, and the two fought to a stalemate, with Muk's newly learned Sludge Bomb deflected by Rapid Spin and Blastoise's physical attacks absorbed into Muk's body. Ash pulled Muk for his Bayleef quickly after. It was sent out to fight Scizor later, who dodged Sludge Bomb easily. Whilst Muk absorbed both Quick Attack and Metal Claw, Scizor was able to throw Muk, and defeated it with Swift.

Muk made an appearance in the special episodes, where it was seen crushing Cassidy, Butch and all of the stolen Poké Balls. It was also seen crushing Tracey when he opened the door to Oak's Lab to Delia.


Muk reappeared in An Old Family Blend!, at Prof. Oak's lab, and then it was transferred to Ash for a brief reunion. Muk was not seen participating in the Lily of the Valley Conference.


File:Muk birch.png
Muk showing affection for Professor Birch

Ash's Muk is an extremely happy and affectionate Pokémon. It grew an attachment in particular to Professor Oak and as a recurring gag, it would always smother the Professor whenever Ash would make a call to the lab. This was first seen twenty episode after its capture, in Who Gets To Keep Togepi?. Muk tackled Professor Oak in excitement in Showdown at the Po-ké Corral, when Oak explained that Muk and Krabby had become just like him from its long period of living with him.

Muk's affection also extends to his trainer, second in enthusiasm only to Bayleef, despite only having fought for him on three occasions. Muk obligingly crushes Ash in excitement whenever Ash returns to the lab or summons it to his party. Its affection also extends to complete strangers, as was seen when it completely ignored Jessie's Lickitung in order to hug her, also smothering James's Victreebel in excitement. It also smothered Professor Birch upon meeting him in The Right Place and the Right Mime!.

Its affection even extends to antagonists, as seen both in the aforementioned encounter with Jessie and James, and also in a special episode, Showdown at the Oak Corral, when it actually appeared sad that Totodile drove Butch and Cassidy away. As Professor Oak said to Jessie, Muk loves humans, and it is not very particular to which kind.

Muk differs from most of Ash's other Pokémon in that it is a defensive Pokémon, with a low attack power and very few moves used across its entire time on the show. It has never been shown to be damaged by a physical attack, with its opponents moves always absorbed by its odd body type. Despite being quite powerful and good in battle, it has only ever defeated one opponent, Bellsprout (it was put to sleep by Victreebel and knocked out against Gary without a win).

Moves used

Using Body Slam
Move First Used In
Body Slam The Fourth Round Rumble
Poison Gas A Tent Situation
Sludge Bomb Can't Beat the Heat!
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.
  • Poison Gas was used in the dub only. In the original Japanese version, Ash just said Muk's name, Betbeton.


  • Muk is Ash's only Pokémon in the Amorphous egg group.

Related articles

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

  This article is part of Project Anime, a Bulbapedia project that covers all aspects of the Pokémon anime.