Ercole Koushiro is one of the original chosen children and main male antagonists of Digimon Adventure. He is also one of the recurring and main male character in Digimon Adventure 2.
He is partnered with Tentomon. Izzy is a computer expert and spends a large fraction of his time trying to figure stuff out on his "PiBook" laptop. Izzy lives with his adopted parents. When he initially found out that he was adopted, he began to subconsciously distant himself from his parents and focusing on his computer. The issue is resolved when his parents come forward with the truth and he accepts them as his true parents.
Ercole often says "Prodigious!"
He is the bearer of the Crest of Knowledge. He is one of the core members of the DigiDestined in both seasons.