Oshawott is a bipedal sea otter-like Pokémon. It has a spherical white head with small, triangular dark-blue ears on the sides. Oshawott's eyes are dark and its dark orange nose is shaped like a horizontal oval. Several freckles cover its cheeks which may be premature whiskers, and two pointed teeth can be seen when it opens its mouth. The light blue fur on its body forms bubble shapes around its neck. Its arms are white and rounded, while its feet are dark blue with three toes each. It also possesses a rudder-like dark blue tail. It carries a pale yellow seashell called a "scalchop" on its belly. This shell is made of the same material as its claws, and is used for both battle and cracking hard berries.
Oshawott, along with Tepig and Snivy, appear when Black accidentally drops his box containing the Pokémon. When Tep and Snivy begin fighting, Oshawott attempts to break them up, only to get hurt in the process. After getting annoyed, he attacks them and sends Tep running off. He was later chosen by Bianca because she thought he was cute. He first appeared in Fussing and Fighting.
Oshawott appears as a Poké Ball summon. It behaves similarly to Piplup in Brawl.
NA: Oshawott carries a little weapon on its stomach known as a scalchop, which can be used to either defend or attack. Its Surf move can knock opponents off the stage, but if you use a reflecting move at just the right moment, you can turn the tide against it!
PAL: Oshawott carries a little shell on its stomach known as a scalchop, which can either be used as a weapon or to defend against attacks. Its Surf move can knock you right off the stage, but if you reflect it just at the right moment, that could really turn the tide back in your favour.
Oshawott appears as one of the player character in PokéPark 2: Wonders Beyond. He's a self-proclaimed investigator for the Cove Area. At first he is suspicious of Pikachu and attempts to interrogate him, until Piplup tells Oshawott that Pikachu is a friend. Oshawott later chases after Pikachu and Piplup after they enter the Wish Park, and narrowly escapes from Cofagrigus with Pikachu. Oshawott's boss and mentor, Samurott then orders Oshawott to work together with Pikachu to investigate the Wish Park and anyone involved, and to rescue Piplup.
In Pokémon Black and White, Oshawott, along with Snivy and Tepig, has the lowest experience yield of all Pokémon, with a base value of 28. This was done specifically for the first two battles of the games, so the player's starter wouldn't level up after defeating Bianca and thus have a level advantage over Cheren.
Oshawott is based on a sea otter pup and samurai. The way that Oshawott's scalchop rests on its belly resembles the way otters look when cracking open shells to eat. This scalchop also holds similarities with Japanese war fans, which were often used by samurai for defensive purposes. Ken Sugimori said that Oshawott and its evolutions were the hardest for the team to design during production, as conceptualizing its evolutions were difficult. They eventually settled on a samurai theme, and a trip to an aquarium inspired them to incorporate elements of sea lions.
Oshawott may be a combination of ocean, shell, water, wash, and otter.
Mijumaru may be a combination of 水 mizu (water) or 未熟 mijuku (naive or immature) and 丸 maru (round). Maru is also a common suffix in male Japanese names. Miju may also refer to an otter named Mijbil, the subject of an autobiographical novel and movie called Ring of Bright Water.