Rolycoly

Rolycoly (タンドン) is a -type Pokémon introduced in Generation VIII.

Biology
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.

Behavior
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.

Special Abilities
Rolycoly has access to the unique ability Steam Engine, which increases Rolycoly's speed stat if hit by a or -type attack.

Trivia

 * Rolycoly shares its species name with Torkoal. They are both known as the Coal Pokemon.

Origin
Rolycoly may be based on a coal-ore or cooled magma rocks.

Etymology
Rolycoly comes from roly-poly and coal.