Koushiro "Izzy" Izumi and Tentomon are two of the main protagonists from Digimon Adventure, Digimon Adventure 02, and Digimon Adventure Tri. He is the brains of the DigiDestined, being a child prodigy who is constantly analyzing the world around him and quickly making accurate inferences on the nature of the Digital World. However, his social skills are lacking due to his preference for computers over people, which has gotten him into trouble on multiple occasions.