Pokémon #578 in the National PokéDex, a Psychic type Pokémon.
Duosion is pale green with a large head, stubby arms, and a body that tapers to a point at the bottom. It has oval, black eyes and a red, diamond-shaped mouth. It is encased in a darker green, gelatinous substance that forms small, round bumps on the lower sides and over Duosion's head. A small circular piece of matter floats inside this substance over this Pokémon’s head. It has two brains, which occasionally causes it to attempt two different actions at once. However, its exhibits greater psychic powers when the brains think alike.
It evolves from Solosis and evolves into Reuniclus.
Japanese Name: Doublan