Ash's Oshawott

Ash's Mijumaru was first seen when Shooti was picking his starter Pokemon, though Mijumaru wanted to get picked, Shooti chose Tsutaaja. Mijumaru starts to take an interest to Ash and began to follow him. In the Episode Mijumaru! Meguroko! Critical Moment!! Mijumaru wants to join Ash's team however, Ash needed Mijumaru's Pokéball from Professor Araragi. Mijumaru is seen defending Ash from Team Rocket in the episode Iris and Kibago. Mijumaru likes Ash very much and even knocked Pikachu off Ash's shoulder. Mijumaru has many powerful attacks including water gun and shell blade. It even won Dent's Hiyappu even though it was at a type disadvantage.

Mijumaru is confirmed to be male in the episode "Get Tsutarja with Attract?" he was affected by a female Tsujara's attract.

Known Moves

 * Water Gun
 * Tackle
 * Shell Blade

Trivia

 * Mijumaru is the first of all Ash's starters to not be caught after a -type starter was captured, Ash captured a grass-starter in each region first, then catching the other starters later on.
 * Mijumaru seems to be over-confident.
 * Mijumaru comes out of the pokeball on its own much like Misty's Psyduck.