Mudkip is a small, amphibious, quadrupedal Pokémon. It has a blue body with a light blue underside. Mudkip has a large head with a blue fin on top and a light-blue tail fin. It has black, beady eyes and orange, star-shaped gills on its cheeks.
By using the fin on its head, Mudkip can detect changes in air and water currents as well as bodies of water. Its fin can also point in a certain direction, as seen in the Pokémon the Series: Ruby and Sapphire episode Date Expectations. Despite its small size, Mudkip is a very strong Pokémon. Mudkip is capable of moving or crushing boulders larger than itself. Its large tail fin provides powerful acceleration to propel it through the water. According to its Pokémon Ranger browser entry, Mudkip is a very docile Pokémon. Mudkip is more commonly found in captivity, though it can be found in swamps and other wetlands. In the wild, it sleeps by burying itself in the mud soil at the water's edge or bottom of a river. It has been recently seen living in the Terarium of Blueberry Academy.
Evolution
Mudkip evolves into Marshtomp, which evolves into Swampert.
(For specifics on this Pokémon's Evolution in the games, refer to Game data→Evolution data.)
Main series
Major appearances
Brock has a Marshtomp that he caught as a Mudkip in A Mudkip Mission. Mudkip Eggs were seen in the episode when Old Man Swamp offered to let Brock see one hatch, and Brock accepted his offer with enthusiasm. Brock's Mudkip later evolved into a Marshtomp in A Chip Off the Old Brock.
Other
Mudkip debuted in Get the Show on the Road!, when May summoned one from Professor Birch's bag to ward off a pack of Poochyena, only for it to use Water Gun on her. Later, when May was asked to pick her first partner Pokémon, she didn't pick Mudkip, remembering the time when it refused to do what she had asked.
In In the Knicker of Time!, a Mudkip was Nicholai's main Pokémon. In ZigZag Zangoose, it was revealed to have evolved to a Marshtomp.
In Having a Wailord of a Time, Nurse Joy asked Ash and Max to look over a Mudkip, along with a Treecko and Torchic. It was very young and cried easily. Mudkip was eventually picked by Stephanie to be her first partner Pokémon.
In A Six Pack Attack!, a Mudkip belonging to Professor Birch was featured along with the other first partner Pokémon. They were being admired by Max and May when Team Rocket captured them along with the other Hoenn and Kanto first partner Pokémon. Max found them and told Mudkip and Squirtle to cool the bars with Water Gun, which eventually freed them. It then helped send Team Rocket blasting off.
Minor appearances
In Gonna Rule The School!, the Pokémon Trainers' School lent a Mudkip to one of the school's underage students for use in lessons.
In a flashback in Abandon Ship!, Tommy owned a Mudkip. It was revealed to have evolved into a Marshtomp and then into a Swampert after it was accidentally abandoned aboard a ship.
A Coordinator's Mudkip appeared in Now That's Flower Power!.
A Mudkip appeared in Pokéblock, Stock, and Berry.
In The Ribbon Cup Caper, a Mudkip was at the S.S. St. Flower's Pokémon Center.
In Off the Unbeaten Path, a Trainer's Mudkip participated in the Pokémon Orienteering competition.
A Trainer's Mudkip appeared in Curbing the Crimson Tide!.
A Coordinator's Mudkip appeared in What I Did for Love!.
In Meloetta's Moonlight Serenade, a Mudkip watched Meloetta's concert.
A Trainer's Mudkip appeared in Mega Evolution Special III.
A Mudkip appeared in Sawyer's flashback in Rivals: Today and Tomorrow!, when he was selecting his first partner Pokémon from Professor Birch.
In Pikachu and the Pokémon Music Squad, a Mudkip was living in a forest.
A Mudkip appeared in a fantasy alongside the other first partner Pokémon in Getting More Than You Battled For!.
In Must Be Our Heroes and the Witch!, a Mudkip appeared in a fantasy.
A Trainer's Mudkip appeared in Getting to the Heart of it All!.
Pokédex entries
Episode
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Pokémon
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Source
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Entry
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AG005
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Mudkip
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Ash's Pokédex
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Mudkip, the Mud Fish Pokémon. Mudkip uses the sensitive fin on its head to take radar readings of its surroundings.
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AG025
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Mudkip
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Ash's Pokédex
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Mudkip, the Mud Fish Pokémon. Mudkip uses the sensitive radar receptors on its headfin to determine what's going on around it. In a pinch, it can brandish enough power to crush rocks.
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Pokémon Omega Ruby and Alpha Sapphire Animated Trailer
Mudkip in the animated trailer
In the Pokémon Omega Ruby and Pokémon Alpha Sapphire Animated Trailer, May owns a Mudkip. It eventually evolved into a Marshtomp while battling Roxanne's Nosepass, and then into a Swampert, which was capable of Mega Evolving.
GOTCHA!
A Mudkip briefly appeared in GOTCHA!.
Pokémon Evolutions
A Mudkip briefly appeared in a fantasy in The Wish as Zinnia told the story of the Draconid people to May.
Ash & Pikachu
- Main article: Brock's Mudkip
Multiple Mudkip appeared in Brock, A Man Of Resolve!!, where Brock caught one of them.
Pokémon Adventures
- Main article: Mumu
In Trying to Trounce Torchic, when Ruby was attacked by Sapphire's Torchic, Professor Birch told him to look in his briefcase, to pick up the Poké Ball with a blue Pokémon and to throw it. The Poké Ball released a Mudkip and he nicknamed him Mumu. In the beginning, Ruby was disappointed with him because he wasn't as attractive as his other Pokémon and he couldn't participate in any Pokémon Contest. He tried with different conditions and then decided that Tough Contests would be perfect for him. Mumu eventually evolved into a Marshtomp and then into a Swampert.
Pokédex entries
Manga
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Chapter
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Entry
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Pokémon Adventures
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PS184
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The fin on its head is like a sensitive radar. The fin is able to detect movements in the air and water. This Pokémon can determine the surroundings around it without using its eyes.*
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Manga
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Chapter
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Entry
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Pokémon Adventures
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PS184
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The fin on Mudkip's head acts as highly sensitive radar. Using this fin to sense movements of water and air, this Pokémon can determine what is taking place around it without using its eyes.*
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Pokémon Chamo-Chamo ☆ Pretty ♪
Mudkip appeared in CCP02.
Pokémon Mystery Dungeon: Ginji's Rescue Team
- Main article: Mudkip (Ginji's Rescue Team)
In Pokémon Mystery Dungeon: Ginji's Rescue Team, Ginji's partner and first friend is a cautious Mudkip. It is sometimes referred to by other teams as a "crybaby".
Pokémon Omega Ruby Crimson Passion and Pokémon Alpha Sapphire Indigo Wisdom
Omega started off with a Mudkip.
Pokémon Pocket Monsters
A Mudkip appeared in Clefairy's Most Deadly Rival as one of Professor Birch's first partner Pokémon.
Pokémon Ruby-Sapphire
Professor Birch was seen owning a Mudkip in I Won't Let You Lead!!.