Garurumon

Garurumon is Champion form of Elecmon.

Plot
Elecmon digivolve to Garurumon and easily wiped out Gaogamon and Sunflowmon, due to Marcus's stubborness about fighting.

Marcus fought Garurumon, but was no match for the huge beast. Suddenly, Agumon showed up and gave Marcus his Digivice, allowing him to Digivolve to GeoGreymon and destroy Garurumon once and for all.