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What are you waiting for? GO!
He is voiced by Masato Amada in the Japanese Version and Steven Blum in the English Version.
He resembles a cyborg-like humanoid beetle that has the power to control electricity.
The plan backfires and the group is almost defeated when J.P. finds his Human Spirit of Thunder in the heart of the factory and evolves to Beetlemon. Beetlemon defeats Snimon and takes its fractal code. The Kokuwamon are free again.
Grumblemon, the evil Legendary Warrior of Earth appears and takes on Agunimon, Lobomon, Kumamon, Kazemon and Beetlemon. Grumblemon then slide evolves to Gigasmon his Beast Warrior form, a previously unseen evolution. Gigasmon proves to be too powerful for the group. Beetlemon attacks Gigasmon but results in the fractal code of the mountain being shown and swallowed by Gigasmon. The group (including Bokomon and Neemon) fall from the cliff and are separated into two groups.
When a flash flood heads straight for the school, Kazemon and Beetlemon make a barrier but Kapurimon is thrown into the water. Tsunomon digivolves to Gabumon to save him and becomes a role model for all the other students.
Shamanmon tells the future of the group as Grumblemon shows up with his new hench-digimon, Golemon and traps Koji so he can't evolve to KendoGarurumon. Working together, Agunimon, Beetlemon and Kumamon defeat Golemon, but Tommy loses his spirit to Gigasmon. Shamanmon is possessed by the Beast Spirit of Fire and attacks Golemon, Grumblemon, Agunimon, Beetlemon and the rest.
Digimon Frontier: Island of Lost Digimon
- His known attack is Thunder Fist.