|Zuzu (Viz: Mumu)|
Outskirts of Littleroot Town
Zuzu is Ruby's male Swampert.
MudkipZuzu is given to Ruby by Professor Birch. Ruby is disgusted with Zuzu's runny nose and generally unattractive appearance, but comes to admire Zuzu's power after Zuzu saves him from a wild Dustox, earning him the nickname "Zuzu." Zuzu later saves Ruby from some wild Nuzleaf. Notably, Zuzu does both of these without orders for which attacks to use.
When Ruby is kidnapped by Team Magma, Zuzu accidentally gets out of his pokéball. Ruby is caught eavesdropping, so he and Zuzu lure Mack's Slugma into the Kaien I, where they initially pretend to have done it by accident; however, when Mack isn't believing Ruby's lies, Ruby and Zuzu look at each other and Zuzu nods. They then drop all pretenses and battle. Zuzu uses Earthquake, risking damaging the submarine, but Ruby and Zuzu get out safely in the escape capsule and drift out along Routes 118 and 119.At the Weather Institute, Norman uses Ruby's PokéBlocks to lure Zuzu—and thus lure Ruby—onto the roof, where they battle. Because he's known them for a long time, Norman can easily counter the attacks of Ruby's other Pokémon. Ruby decides to fight Norman with Zuzu, as Norman doesn't know Zuzu's attacks and weaknesses. He uses a strategy where Zuzu is on the ground, feeding Mud Shot into the pipes of the Weather Institute to attack Norman. The strategy is very successful.
The battle ends when Ruby and Norman fall off the roof and almost die.
SwampertRuby escapes down the river riding Zuzu directly after his evolution.
Ruby sends him out against Team Aqua and Team Magma grunts in the Seafloor Cavern. He later sends Zuzu out against Archie and Maxie. Zuzu and Toro manage a combo attack which hits them with Muddy Water.
- Mud Shot
- Rock Smash
- Muddy Water
- Hydro Cannon
- Mud Sport
- Water Gun
The author describes Zuzu: "A happy-go-lucky Pokémon, which rules the department of strength…?"
- Other than Plusle, Zuzu is Ruby's only male Pokémon