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List of Digimon Frontier episodes 14
"No Whamon"
雷よ! 岩をも砕け! ボルグモン決死のチャレンジ
(Ikazuchi yo! Iwa wo Mokudake! Borugumon Kesshi no Charenji)
"Rock Breaking Thunder! Bolgmon's Do-or-Die Challenge"
(Ja:) Fuji Television
(En:) Sensation Animation
Airdate (Ja:) July 14, 2002
(En:) November 18, 2002
Written by (En:) Steven Jay Blum
Toei Animation
More episodes
01 - 02 - 03 - 04 - 05 - 06 - 07 - 08 - 09 - 10
11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20
21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30
31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40
41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50
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Cast - Attacks - Locations
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The DigiDestined escape Seraphimon's castle, but are forced to fight when their path ends in a cavern, and Grumblemon makes his last stand against them.


Escaping from Seraphimon's castle, Trailmon (Kettle) brings the children to an underground cavern, and Bokomon takes Seraphimon's egg from Zoe to properly hatch it. Unsure of where they are, the children begin to look for a way out, but they only find a large, icy cavern with a pool in the center. The group begins to look for an exit, but suddenly a Whamon appears from the pool and is uncharacteristically out of control. Koji and Takuya both spirit evolve to calm down Whamon. Zoe asks him what's wrong, and Whamon tells them about how he was trapped in the cavern after Grumblemon stole some fractal code that resulted in part of the ocean being sucked into the cavern.

Grumblemon, having seen Kettle head back toward Seraphimon's castle and backtrack the way he came, appears and uses more magic to create a small army of Golemon. Arbormon, who was hidden, grapples Lobomon and Agunimon, taking them out of the fight and beating them. No longer able to stand on the sidelines, Tommy and J.P. spirit evolve. J.P., however, was accidentally injured by Whamon when he was thrashing around and is quickly defeated. When Grumblemon moves in for a finishing blow, Whamon attacks, incidentally releasing the B Spirit of Thunder that he accidentally swallowed. J.P. beast spirit evolves to MetalKabuterimon and is initially completely out of control, blasting the cavern around them and defeating Arbormon as Petaldramon. JP gains control over his Beast Spirit and turns on Grumblemon and the last Golemon. With one shot, JP destroys both Grumblemon and Golemon and gets Grumblemon's Human Spirit while returning Zoe's to her. However, the cave begins to collapse due to damage it took and water rushes in. Whamon takes the group into his mouth and returns to the ocean, ferrying them to an island as thanks.

Featured Characters[]

(Numbers indicate order of appearance. Bolded characters are fought by the protagonist(s), and italicized characters feature non-explicitly, e.g. voice, silhouette, image.)

Humans Rookie Champion Hybrid


Koji Minamoto 1 Lobomon 10 Koji Minamoto
Koji Minamoto t Arrow R Lobomon b Arrow R Red Koji Minamoto t
H Spirit of Light b
Takuya Kanbara 1 Agunimon 10 Takuya Kanbara
Takuya Kanbara t Arrow R Agunimon b Arrow R Red Takuya Kanbara t
H Spirit of Flame b
J.P. Shibayama 3 Beetlemon 5 J.P. Shibayama 7 MetalKabuterimon 8 Beetlemon 9 J.P. Shibayama
J.P. Shibayama t Arrow R Beetlemon b Arrow R Red J.P. Shibayama t Arrow R MetalKabuterimon b Arrow R Blue Beetlemon b Arrow R Red J.P. Shibayama t
H Spirit of Thunder b B Spirit of Thunder b H Spirit of Thunder b
Tommy Himi 3 Kumamon 9 Tommy Himi
Tommy Himi t Arrow R Kumamon b Arrow R Red Tommy Himi t
H Spirit of Ice b
Arbormon 6 Petaldramon
Arbormon b Arrow R Blue Petaldramon b
B Spirit of Wood b


"Hmph. Thou should take care speaking of Grumblemon when thou has yet to find thine own Beast Spirit."

Mercurymon states Ranamon's irony.

Other Notes[]

Dubbing changes

  • Grumblemon's pentagrams are once again changed into three concentric circles.