Archen (Japanese: アーケン Archen) is a dual-type Rock/Flying Fossil Pokémon. It is resurrected from a Plume Fossil and evolves into Archeops starting at level 37.
Archen is a small, bipedal creature with mixed reptilian and avian traits. Its large, red head is covered in discernible scales, and its neck has blue and red feathers. Its body is covered in untidy, sallow feathers, and it has blue, clawed wings that cannot be used for flight. It has short, thin legs, and a twig-like tail that bears a diamond-shaped blue feather. It has wide white eyes with black pupils and no irises.
Archen is extinct, but can be revived from fossils. It is believed to be the ancestor of all bird Pokémon. It hunts prey as they move about the forest. In the anime, it was shown Archen does not like Pokémon food, but can grow a special plant with its cries. It enjoys the Berries grown on this plant.