Question: what are all the mythical pokemon?
Answer: Mew. Artwork of Mew from the 20th Anniversary. Mew is a Psychic-type Mythical Pokémon. ... 
Celebi. Obtaining Celebi on a Nintendo DS Lite via Mystery Gift. Celebi is a Psychic/Grass-type Mythical Pokémon. ... 
Jirachi. Encountering Jirachi. Jirachi is a Steel/Psychic-type Mythical Pokémon.