Oshawott first appeared inFussing and Fighting, as one of the Pokémon owned byProfessor Juniper along with the otherUnova first partner Pokémon,Snivy andTepig. AfterTepig gets into a fight withSnivy, Oshawott unsuccessfully tries to get them to stop and constantly gets hit in the process. After being sent flying into a wall, Oshawott's anger reaches its boiling point and begins attacking Tepig and Snivy, forcing them to use any object in Professor Juniper's lab they could find to protect themselves. Eventually, Professor Juniper finds the three in their violent tussle and sends them back into theirPoké Balls. The three sleep inside while Professor Juniper worriedly wonders if they are truly ready to be partners for the upcomingTrainers.
Later, Oshawott, along with Tepig and Snivy, are sent toBlack's home from the lab and the package soon reaches the boy's hands. Black's cold, which he got after staying in the rain while waiting for the package to come, causes him to sneeze and drop the box, releasing the Pokémon from their Poké Balls. Tepig and Snivy get into another fight which Oshawott once again tries to stop. Once again, Oshawott gets angry and violently attacks them. Tepig runs off and Black follows him, leaving Snivy at the mercy of Oshawott's rage. Later, Professor Juniper shockingly arrives to see the aftermath of the battle between Snivy and Oshawott. Next,Bianca andCheren arrive wondering what had happened; while Professor Juniper worries about her brokenPokédexes, Bianca hands Cheren Snivy, stating that he resembled him, and takes Oshawott for herself.
Oshawott during the Striaton Gym
InWelcome To Striaton City!!, after Bianca and Cheren arrive inStriaton City to tell Black to take care of his Pokédex, they get roped into hisGym battle. Oshawott, along with Snivy and Tepig, now named Tep, are used to battle theGym Leaders,Cilan,Chili, andCress. Before doing so, Oshawott is used to teach Bianca about Pokémontype compatibility by having Tep and Snivy attack him and teach Bianca which types are strong and weak againstWater-type Pokémon. After passing through the Gym's challenge, they face the Gym Leaders. At first, Oshawott and the others are overpowered by the three Pokémon belonging to the Gym Leaders but eventually gain the upper hand when they use teamwork. Eventually, after blocking an attack byCilan's Pansage, Oshawott retaliates by throwing itsscalchop atChili's Pansear, defeating it. Immediately after this, Oshawott has his scalchop shattered by Pansage and is defeated. Luckily, Tep managed to grab some of Pansage's leaves and feeds them to Oshawott and Snivy, rejuvenating them. Just as they are revived, the match's time limit ends, allowing Black, Cheren, and Bianca to win with 3-2.
InWith a Little Help from My Friends, atAnville Town, Oshawott helps Bianca practice the flute by holding up sheet music for her to play. When Bianca meets withWhite, she reveals that herfather had constantly been attempting to get her to return home. Due to her father's overprotective nature, Bianca was unable to train and become stronger, leaving Oshawott andLitwick unskilled in battling. Later, Oshawott was used alongside White'sAmanda to battle a wildVullaby at theCafé Sonata to protect a wildMeloetta. Realizing that Vullaby's skull diaper was protecting a weak spot, White had Amanda distract Vullaby withLeaf Tornado, allowing Oshawott to throw its scalchop into the diaper undetected. This weakened Vullaby enough for Meloetta to defeat it, allowing White to catch and add it to her team.
After Bianca becomes Professor Juniper's assistant, Oshawott assists his Trainer with her work.
InPink Slip, Oshawott and Bianca listen on the radio to the towns frozen by thePlasma Frigate.
InThe Final Battle, Bianca combined Oshawott'sWater Pledge with the Fire Pledge fromBenga'sPignite, theGrass Pledge from Cheren's Servine, and the Water Pledge fromCedric Juniper'sSamurott to break through the ice covering theMarine Tube, freeing Cheren and his class, who were trapped inside. Later, Oshawott, alongside the other eight Unova first partner Pokémon, fired theirPledge moves atN's Castle to stop the fire caused by the Plasma Frigate.
Personality and characteristics
Oshawott is normally the calmer, shyer, and most peaceful of the threeUnova first partner Pokémon that were supposed to go toBianca,Black, andCheren. However, whenever Oshawott loses his temper, he takes on another personality and goes into a violent frenzy. When angered, he will attack anything in the vicinity, usually destroying or harming whatever or whoever is unlucky enough to be near him.
