Tumblemon

Tumblemon is an Ore Digimon. It is an In-Training Digimon that grows by eating rocks. Because its digestive system is not fully developed yet, it stores an amount of ore in its body unimaginable given its small size, and gradually converts it into nourishment. The site in which its eye is located also serves as its mouth, and it seems to turn completely blind while eating.

Attacks
 * Rock Breath: Spits out rocks from its large mouth.

Etymologies
Official romanization given by the Digimon Reference Book and used in Japanese media.
 * Goromon (ゴロモン)
 * (Ja:) Gorongoron (ゴロンゴロン), the onomatopoeia for the sound of a boulder rolling.

Official name given by the Digimon Encyclopedia and used in American English media.
 * Tumblemon
 * (En:)

Vital Bracelet Digital Monster: Titan of Dust
Tumblemon digivolves from Sandmon and can digivolve to Sunarizamon.