Tumblemon

Goromon is an Ore Digimon.

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

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