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Yamato is a character in the anime and manga series Digimon Adventure, Digimon Adventure 02 and Digimon Adventure tri. He is a DigiDestined, partnered with Gabumon, and the bearer of the Crest of Friendship. He is the older brother of Takeru Takaishi.

Yamato starts as a secretive loner with a cool demeanor. He is mature, thoughtful and level-headed, and more likely to think things through than charge head-on. He is a deeply caring person who will do anything for a friend and is very protective of his loved ones. He is prone to second-guessing and self-deprecation when he cannot protect others—his self-worth hinges on his ability to be a good friend. Unlike Tai, who is more willing to look at the "big picture", sometimes to the detriment of his friends, Yamato always tries to focus on the good of his small circle of friends. As a teenager, he is more laid-back and easygoing and is more willing to support his friends risking themselves against enemy Digimon.

However, he still reacts strongly when his friends are under pressure, such as when the news depicted the team's Digimon as monsters, and Tai became reluctant to defend their reputation due to fears about possible casualties. He is also a good singer.

Yamato's younger brother, Takeru Takaishi, is also one of the eight DigiDestined, but their parents are divorced and so they cannot spend much time together. He is very protective of Takeru and often acts harshly when Takeru is in trouble. After their adventures in the Digital World, their relationship becomes closer, and Matt trusts T.K. more, acknowledging his burgeoning independence.