A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
Saffron City is the largest city in Kanto, and for good reason. Silph Co., which produces most forms of Poké Ball, Potion, and Technical Machine, is headquartered here. It is the only city to host two Gyms, though only one is officially recognized. The station for the Magnet Train, a high-speed link back to Goldenrod City, is located in the northwest district.
Stop by Mr. Psychic's house in the southeast district to receive TM29 (Psychic).
Silph Co. is open for business, but as it was recently attacked by Team Rocket, visitors are restricted to the first floor. The security guard blocking the stairs gives you an Up-Grade, one of the company's latest products, as a souvenir.
Magnet Train Station
The Magnet Train Station is located in the city's northwest district, but the train is not currently operational due to a problem at the Kanto Power Plant. Once the power is restored, this high-speed bullet train runs to Goldenrod City and back at any time.