Pierre is a minor character from Pokémon: Johto League Champions.
Pokémon the Series: Gold and Silver
Pierre is a scientist, who, with Marie, had to determine Sudowoodo's type. Despite their arguing, they managed to examine one Sudowoodo and come to a conclusion it uses Mimic to copy moves. The revelation that Sudowoodo ran away from water had them confirm Sudowoodo is a Rock-type.
Marie and Pierre are names of the chemists Pierre and Marie-Curie Sklodowska.