Charizard is Satoshi's first Pokémon. He obtains it as aCharmander in the Prologue. It evolves intoCharmeleon after defeating Shigeru'sSquirtle and into Charizard after defeatingBlaine'sArcanine.

Satoshi findsRaichu inViridian Forest when it is still aPikachu. Shy at first, it warms up to Satoshi after he proves that he is friendly.

InCerulean City, Pikachu participates in its first Gym battle: it has trouble swimming and falls into the water. Although Satoshi does not defeat Misty, the Gym Leader, Pikachu wins Satoshi his Cascade Badge by saving Misty from aTeam Rocket Grunt'sGyarados.

Pikachu voluntarily evolves into Raichu with aThunder Stone before battling the Elite Four. At theIndigo Plateau, it is seen defeatingLorelei's Cloyster.

Raichu's known moves areThunderbolt andThunder.

Ditto is a Pokémon that Satoshi finds in theSafari Zone.

Ditto's only move isTransform.

Lapras originally belonged to theSilph Co. and is given to Satoshi after it tries to defeatGiovanni.

Lapras's known moves areMist,Confuse Ray, andHydro Pump.

Satoshi capturesJigglypuff before entering the Safari Zone. Jigglypuff was later seen lullingArticuno to sleep that Blaine might capture the legendary bird. The circumstances of its capture are never explored.

Jigglypuff's only known move isSing.

Satoshi'sAlakazam first appears when Satoshi sends it out to battleAgatha'sGengar. The circumstances of its capture are never explored.

None of Alakazam's moves are known.

Satoshi receives manyMagikarp (at least three), aSlowpoke, aKrabby, and aPsyduck from afisherman in return for hisDratini while at the Safari Zone. They are all sent to his Box afterwards.

None of these Pokémon's moves are known.

Misty givesSeel to Satoshi after he saves her fromGyarados. Satoshi then releases it upon arriving in theSeafoam Islands.

None of Seel's moves are known.

Dratini is a Pokémon that Satoshi found in the Safari Zone byfishing. He gives it to a fisherman afterwards, in exchange for several Water-type Pokémon (see above).

None of Dratini's moves are known.

Satoshi catches aNidoran♂ while the Pokémon is getting the mail. However, the Nidoran♂ ends up being a metamorphosedBill. Bill returns to his human self when Satoshi places him in a machine that separates his human self from his Pokémon self.

None of Nidoran♂'s moves are known.