- Red's rival in the original games (R/B/G), in the remakes (FR/LG), and the manga. The first original games were Red & Green (hence the name Green for the rival), which is why there's a LeafGreen version, and not an OceanBlue (or w.e), but the Green version was only released in Japan. Pokémon Blue is the version released in the USA. Enough proof that his name is Green, and not Blue.
Blue: