Goh 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. Paras resides at a habitat at the Sakuragi Institute in Vermilion City. It is not the evolved form of
Goh's Paras as that is a separate Pokémon that were both caught at the same time.