The Plume Fossil is obtainable exclusively in Pokémon Black and White and Pokémon Sun and Pokémon Moon. If the player revives the fossil, it becomes Archen. The Plume Fossil is located in Relic Castle during the player's first visit in Black and White, talk to a backpacker on the ground floor to obtain the Plume Fossil, and at Olivia's shop in Sun and Moon.