Izzy (Koushiro) wanders off to investigate the machinery and finds a secret room with a large power source.
In this classic episode, the children discover a mysterious "factory" where Digimon are being manufactured and powered by mysterious batteries. : Digimon Adventure Episode 5
: Attempting to defend Izzy, Tentomon digivolves for the first time into his Champion form, Kabuterimon , and uses his "Electro Shocker" (Mega Blaster) to destroy the Black Gear controlling Andromon. Izzy (Koushiro) wanders off to investigate the machinery