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That's all you can do with your spirits? That's pathetic. Even make pathetic look good.Grumblemon

Grumblemon is one of the Evil Hybrids in the anime, Digimon Frontier.


Grumblemon is a Human-hybrid Digimon that resembles an ogre/troll hybrid monster with snake eyes, a big nose, spikes for armor, a stocking hat with a spike on the end, and he wields a hammer with spikes to bash his opponents. Grumblemon is also not very bright. He can Slide Evolution to his alter-ego, Gigasmon.

Digimon Frontier

Grumblemon first appeared in episode 5 of Digimon Frontier as a shadowy figure. He kidnapped the female KaratsukiNumemon in the KaratsukiNumemon village. Koji tries to free the female KaratsukiNumemon, but Grumblemon threw Koji out the cave. While Takuya, his friends, Bokomon and Neemon were hanging on the edges by the KaratsukiNumemon, Grumblemon shows himself. The KaratsukiNumemon leader demands Grumblemon to release their daughters, but Grumblemon attacked instead, scaring the KaratsukiNumemon. Koji Spirit-Evolved to Lobomon to battle Grumblemon, while Takuya and the others Spirit-Evolved to help Lobomon to battle the gnome as well. While Lobomon, Agunimon, and Beetlemon distracted Grumblemon, Kazemon and Kumamon freed the female KaratsukiNumemon and the Karatsukimon families were reunited. Grumblemon Slide-Evolved to Gigasmon and easily defeated the 5 heroes and stole some data from the Karatsukimon home. 

After his Beast Spirit got taken away by BurningGreymon, he ordered the other Evil Hybrids to help him get his revenge on the Digidestined for stealing his Beast Spirit. While the heroes discovered an underground cave where they also found Whamon who was trapped in there, too, Grumblemon arrives and summons a whole army of his Golemon minions. While J.P. was too weak to move, Grumblemon attempts to kill him with his Seismic Sledge attack, but Whamon shot water at Grumblemon, crashing him into a wall. While J.P. discovers his Beast Spirit for the first time, Grumblemon attempts to steal that Beast Spirit, but J.P. quickly caught it in his Digivice, allowing him to Beast Spirit-Evolve into MetalKabuterimon for the first time.  While MetalKabuterimon uncontrollably wrecked the cave, Grumblemon attempts to convince him to be a friend, but MetalKabuterimon said to Grumblemon that he didn't understand the meaning of friendship, and aimed his Electron Cannon at the ogre, blasting him at close range along with the last Golemon. MetalKabuterimon Slide-Evolved to Beetlemon and purified Grumblemon's data and got Zoe's Spirit back (which Gigasmon stole from Zoe) upon his defeat.

Later on, he returned in the episode, "Glean Eggs And Scram". He became good with the heroes to fight the Royal Knights.


He has an army of Golemon as his minions.


  • Seismic Sledge
  • Jack in the Box
  • Seismic Slam


Ogre type Digimon that has succeeded the power of AncientVolcamon of the Ancient Warriors of legend, his attribute is earth. He is a craftsman that has made his own weapons and armor. He is abhorred when he is ordered around by other people. He equipped with the "Grotto Armor" and the "Grotto Hammer".

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