Oddish is a small, round Pokémon that resembles a blue plant with a bulbous body and large green leaves on top. It is classified as a Grass/Poison type and is known for its ability to absorb sunlight, which it uses to grow and thrive. Oddish is often found in grassy areas and is known to be active during the night. When Oddish is exposed to moonlight, it can evolve into Gloom, which is a larger, more complex Pokémon. Gloom can further evolve into Vileplume or Bellossom, depending on the conditions and items used. Oddish is popular among trainers for its unique abilities and cute appearance.