Bill (Japanese: ソネザキマサキ Masaki Sonezaki) is a Pokémon Researcher, widely regarded as an expert in many fields. He has made many appearances in the games. Bill is most commonly found in his Sea Cottage, which is north of Cerulean City at the end of Route 25. He is most notable for his first appearance in the Generation I games and for his Pokémon Storage System that has been pertinent in the entire main series.