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Poké Ball
Debuts in Trying to Trounce Torchic
Caught at Outskirts of Littleroot Town
Evolves in Tripped Up by Torkoal
Master Class with Masquerain
Gender Male
Ability Torrent
Nature Relaxed
Current location With Ruby
Mudkip Marshtomp Swampert
This Pokémon spent 17 rounds as Mudkip and 31 rounds as Marshtomp.

Mumu (Japanese: ZUZU), known as Zuzu in Chuang Yi's translations, is one of the Pokémon that Ruby has received in the Pokémon Adventures manga. Mumu is used in the Toughness category for Contests.


Mumu as a Mudkip

When Ruby was rescued by Sapphire from a pack of wild Mightyena, she took him to her Secret Base, he thought she was a Pokémon of some sort, and was shocked to the spine when she started talking. The two ended up getting into a fight after he ordered Nana to bite this supposed "Pokémon," and still holding his own Pokémon from fighting back, he phoned Professor Birch on the Pokégear that was in his bag, and was told to choose the "blue Pokémon," which he then chose over the "green one." However, against Sapphire's well-trained Torchic, it was no match even with its type advantage. After Ruby was told the "cave girl" was in fact Birch's daughter, who had been helping him with his field research, they resolved this dispute before a wild Seviper suddenly attacked them. When Sapphire seemingly subdued it, the two decided to make a bet after getting into an argument over Contests and Gym battles, and that the one who wins all the Contests or Gyms in the Hoenn region wins the bet. With Sapphire unconscious from the injuries she received from the Mightyena, Ruby swiftly defeated the Seviper after treating her, and later nicknamed the Mudkip "Mumu." Mumu tended to have a running nose.

Being that Ruby still was predisposed to Contests rather than battles as his father would intend, Ruby then continued his journey to conquer the Contests, and met several wild Pokémon that attacked him and Mumu, such as Dustox and Nuzleaf. In doing so, the boy then decided that he would be best for the Tough category of Pokémon Contests.

Mumu as a Marshtomp

When the two arrived in Slateport City, Mumu finally evolved into a Marshtomp and gained the awe of the Pokémon Fan Club Chairman, who also adored Kiki and Nana and tried to help Ruby enlist in the Contests there, but with no Hoenn Contest Pass, he wasn't accepted. Instead, the two ended up being dragged into a mire when three Magma Admins kidnapped the two along with Captain Stern. Tied up and put to sleep by the gas Tabitha's Torkoal speed, it wasn't until a while later that Ruby awakened, and Mumu popped out of his ball to help free its owner. Upon realizing that the one interrogating Stern for information now was in cahoots with Tabitha and Courtney, who had attacked him and Sapphire before, Ruby used his Pokéblock-making skills to lure Blaise's Slugma into the Submarine they were planning to steal, and after being subjected to his traumatizing illusions, instead seized the opportunity to escape on the emergency escape pod installed in the submarine with a series of Earthquake attacks.

Awakening quite a while later, Ruby and Mumu drifted all the way to Route 119 where Ruby was again attacked by a Seviper, this time with a Zangoose, and thanks to their fangs impaling all his party Pokémon's balls, it had to be a wild Feebas that had grown attached to Ruby who finished them off. After reluctantly adding it to his team, Ruby would be stricken with another danger, possibly the worst of all: his infuriated father, who had been tracking him down ever since the beginning of his journey. Nana and Kiki were no match for his Slaking, being that Norman taught the two Pokémon their moves, but Mumu was another story, and with his well-hidden Mud Shot, managed to distract the leader for a while before his Vigoroth began to counter it. Through an unfortunate chain of events, just when the fight seemed to go to a halt with Castform's help, both Ruby and Norman's lives would be in peril as they hung from a pipe, and nearly had a deadly fall that they avoided thanks to the Running Shoes he received for his birthday weeks ago.

With this training, Ruby and Sapphire teamed up again against Maxie and Archie after they insidiously defeated Wallace, and succeeded in driving them away before their Plusle and Minun delivered the final blow.

In the Emerald chapter, Mumu appeared in Ruby's party again, but despite being enlisted as one of the three Pokémon he registered with for the Battle Dome tournament, wasn't used to battle Emerald. However, he was the only one of his entire party to be used to move up along the Battle Tower when Guile Hideout seized control of it, and after the villain succeeded in invoking a wish from the Jirachi he captured, Mumu was taught the ultimate Water attack, Hydro Cannon, and teamed up with the 8 other starters to destroy Guile's fake, giant Kyogre monster.

Moves used

Mumu Mud Sport.png
Using Mud Sport
Mumu Silver Feraligatr Hydro Cannon.png
Using Hydro Cannon
Move First Used In
Earthquake Slugging It Out with Slugma II
Mud Shot Hanging Around With Slaking I
Rock Smash What Would You Do for a Whismur?
Bide I More Than Like You, Luvdisc I
Muddy Water The Beginning of the End with Kyogre & Groudon X
Mud Sport The Beginning of the End with Kyogre & Groudon XI
Endeavor It All Ends Now I
Hydro Cannon  The Final Battle VII
A shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.


  • Although Mumu doesn't evolve into its final stage until volume 19, the cover art depicts him as a Swampert along with Sapphire's Chic (which by then was already a Blaziken) the volume prior. This might be due to the fact that before being released in volume form, few to several rounds, even within the same chapter, may be left uncollected, and so the fans were expected to be aware of its evolution already, which happened mere chapters after the end of this volume. Alternatively, it may just be a result of the fact that Mumu and Chic were always seen in the same evolution stage when placed in a volume cover together, just as Exbo, Megaree, and Feraligatr were in the covers for the Gold, Silver, & Crystal chapter.

See also

For more information on this Pokémon's species, see Mudkip, Marshtomp, and Swampert.

Project Manga logo.png This article is part of Project Manga, a Bulbapedia project that aims to write comprehensive articles on each series of Pokémon manga.