Matt Ishida (Yamato Ishida) is a main character in the Digimon Adventure anime series, known as the "cool" and brooding older brother of T.K., partnered with the Digimon Gabumon, and the bearer of the Crest of Friendship. He is a talented musician, often seen playing the harmonica or bass guitar, and his character arc involves overcoming his initial loner tendencies to form strong bonds, particularly with Tai.