Oshawott (Mijumaru)

When I first started playing Pokemon Black, Oshawott was the Pokemon I chose to start with. And when I saw the first episode of Pokemon Black and White, I loved Oshawott's character even more. Because of this I decided to apply for Oshawott's fanlisting. Part of the reason why I named this fanlisting Cute is because this is what Ash calls Oshawott in the first Pokemon Black and White episode, after which Oshawott gets very excited at being called this and takes a likeness to Ash, and begins to follow him everywhere.

From Bulbapedia:

Oshawott is a Water-type Pokémon. It evolves into Dewott starting at level 17, which evolves into Samurott starting at level 36. Along with Snivy and Tepig, Oshawott is one of the starter Pokémon of the Unova region, able to be chosen at the beginning of Pokémon Black and White.

Oshawott is a bipedal sea otter-like Pokémon, primarily light blue, dark blue, and white in coloration. Oshawott has a rounded, spherical white head, with small, triangular dark-blue ears to the sides. Oshawott's eyes are large, dark, and ovoid in shape; its dark-orange nose is shaped like an oval on its side. Oshawott also possesses speckles to the sides of its face, most likely meant to be a stylistic implication of short whiskers in the common manner of cartoon canines, and light blue bubble-esque features composing a "collar" around its neck. Oshawott's torso is light blue, and decorated with a pale yellow seashell feature in the center. Made out of keratin, this appendage, called a "scalchop", can be removed and used in various ways; mainly, as a weapon. Its small, digit-less and somewhat rounded arms are white in coloration, with its feet—having, unlike its forearms, discernible digits—colored dark blue. Oshawott also possesses a slightly plank-shaped dark blue tail and a pair of fangs unseen until it opens its mouth.

Ash's Oshawott
Ash's Oshawott first appears in In The Shadow of Zekrom!, under the ownership of Professor Juniper. He begins to admire Ash and decides to leave the lab and follow him wherever he goes. He then saves Ash and Iris from Team Rocket in Enter Iris and Axew! and reappears again in A Sandile Gusher of Change! where he officially joins Ash's party.

In the Pokemon Adventures manga
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, it attacks them and sends Tep running off. It was later chosen by Bianca because she thought it was cute.