Tai Kamiya was a DigiDestined for the first two seasons of the Digimon anime. He is older brother to Kari Kamiya and the original leader of the DigiDestined group. His Digimon partner is Agumon and his main trait is his courage which is reflected in the Crest of Courage.
In the English dub version of the Digimon anime Tai was voiced by Joshua Seth for season 1, season 2 and Digimon: The Movie.
For Digimon: Revenge of Diaboromon, Joshua Seth didn't return so Tai was voiced by Jason Spisak.