Character: Caterpie (Satoshi)

Caterpie known as the Worm Pokémon, are larval Pokémon found in the wild early in the Kanto and Johto regions. In main series Pokémon games set in these regions, Caterpie are among the earliest and easiest Pokémon species caught by players, as they are very weak. They can be evolved into their cocoon-like Metapod form and eventually into the butterfly-like Butterfree form. Caterpie in the wild employ biological adaptations to survive, much like real caterpillars, in that their green bodies are useful for camouflage in foliage, their eyes are patterned to scare away predators, their suction-cup feet allow them to climb any surface, and the osmeterium on their heads can project a horrid stench to repel predators. It bears a resemblance to the spicebush swallowtail caterpillar.

In the anime, Caterpie as the first Pokémon Ash ever caught in his trainer career, and it eventually evolved into a Butterfree and was later traded for a Raticate on the S.S. Saint Anne but is traded back later in the episode. Ash releases it later so it could mate with a pink Butterfree.

As Emily was growing up both Ralph and herself managed to coincidently obtain a Caterpie at the same time. This irked Emily and intensified their rivalry.

Go wanted to catch as many Pokémon as he could and one day while in a forest in the Kanto region, he caught every Bug type Pokémon native to Kanto. It was the first Kanto Bug Pokémon Go caught and he just threw the Poké Ball at it to capture it. Caterpie resides at a habitat at the Sakuragi Institute in Vermilion City.

Bucky's Caterpie went in a race with all the other children's Dunsparce, but it couldn't keep up with them. Caterpie was sent out to capture Dunsparce after it appeared again when Team Rocket was defeated. Bucky's Caterpie used Tackle to weaken Dunsparce in order for Bucky to capture it.

As Ralph was growing up both Emily and himself managed to coincidently obtain a Caterpie at the same time. This irked Ralph and intensified their rivalry.

Xander's Caterpie appeared out of the bushes in front of Ash and his friends and used string shot to tie them all up.