Grumblemon

Grumblemon is an Ogre Digimon. It is the Legendary Human Warrior of Earth.

Attacks
 * Seismic Sledge (Snake Eye Break): Smashes its "Grotte Hammer" into foe.
 * Jack in the Box

Design
Grumblemon's design is derived from the mythological, a diminutive but humanoid entity defined by  as an earth elemental. It wields the "Grotte Hammer" and can summon more than one of them.

Etymologies
Official romanization given by the Digimon Reference Book and used through the series.
 * Grottemon (グロットモン)
 * En: Grotte" (lit. "").

Name used in the American English dub of Digimon Frontier as well as many localized materials.
 * Grumblemon
 * En:.