Oddish is a nocturnal Pokémon, using moonlight rather than the sun's rays for photosynthesis. During the day, Oddish avoids the sun's heat and brightness by burying itself into the earth, leaving only the leaves on top of its head visible above ground. In this way it disguises itself as a plant, misdirecting its carnivorous diurnal predators.
While buried, Oddish nourishes itself by absorbing nutrients from the soil using its feet, which are said to temporarily change into a root-like structure for this purpose.
If anyone pulls at Oddish's leaves and tries to uproot it while it is buried underground, Oddish will react by shrieking in a horrible voice.
Once nightfall comes, exposure to moonlight causes Oddish to become much more active. It extracts itself from the ground, and its extremities change back into the shape of legs. It then proceeds to bathe itself in the moonlight and grow, as well as wander around scattering its seeds. With the coming of dawn, the cycle repeats.
Oddish is the only Pokémon for which we know the pseudo-Latin "scientific name", as it appears in a Pokédex entry: Oddium wanderus.
Oddish looks like a small animated plant. Its body is blue, with two small feet and red eyes. On top of its head grows a large clump of five long green leaves.The Group of Oddish
Oddish has made a fair number of appearances, but all of them are more or less cameos. Oddish usually appears as a part of a group of Grass-type Pokémon.
In one notable episode, an Oddish is staying with a number of Hoppip whose owner uses them to predict the weather. The unfortunate Oddish envies the Hoppip for their ability to 'fly' in strong breezes.