Brock's Marshtomp

History
Brock caught Mudkip in A Mudkip Mission. Mudkip lived at a pond where a number of Mudkip were. While most of the Pokémon left the pond as they grew older, the one that Brock caught was already mature and acted as a guardian of the younger, smaller Mudkip. It joined Brock and left the pond after he helped it rescue itself and the younger Mudkip from a Team Rocket attack.

In A Chip Off the Old Brock, Mudkip evolved into a Marshtomp during a training battle versus 's and automatically learned  due to it's new type gain. It then became smitten with a, as Brock was smitten by its Trainer.

Marshtomp is among the more behaved of the gang's Pokémon. It is often seen helping Ash's Pikachu break up scuffles between Pokémon. Being a Pokémon, it usually worked with Brock's Ludicolo to launch double  attacks. It is also called upon to search for things underwater, and often used to help track down a missing Pokémon or object (usually due to Team Rocket stealing it) using the fin on its head as a radar.

Brock left his Marshtomp at the Pewter Gym when he decided to join in the Sinnoh region.

Moves

 * Water Gun
 * Mud Shot
 * Protect
 * Tackle