Izzy obtains the Crest of Knowledge. His digimon partner is Tentomon.

Pabumon (fresh level)

Digivolves to...

Motimon (in-training level)

Digivolves to...

Tentomon (rookie level)

Digivolves to...

Kabuterimon (champion level)

+ =
Digivolves to...

Megakabuterimon (ultimate level)