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Rolycoly resembles a floating coal with a single orange eye. Four rocky bulges stick out of Rolycoly's sides. A larger circular piece of rock is attached to Rolycoly, which allows it to move around.
Rolycoly uses its eye to illuminate the dark caverns it inhabits and can attach bits of coal onto its body to maneuver around its surroundings.
In times past, the entire population of families living in the Galar region would use pieces of coal dropped by Rolycoly as a heat source for cooking food and keeping houses warm. Even today, people would bring along Rolycoly during outdoor activities.
| Bold indicates this Pokémon receives STAB from this move.|
Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.
- Rolycoly shares its species name with Torkoal. They are both known as the Coal Pokémon.
Rolycoly may be based on a coal-ore or cooled magma rocks. It also has some characteristics of a one-wheeled vehicle, such as the circular coal ore attached to Rolycoly's underside.
Rolycoly comes from roly-poly and coal.