Tai is the
leader of the DigiDestined in Digimon Adventure and the leader of the senior
group in Digimon Zero Two. He is the older brother to Kari Kamiya.As a leader, he often acts first without realizing the consequences of his actions. This has led him to moments of friction and guilt between his best friend Matt Ishida, his oldest friend Sora Takenouchi, as well as his Digimon partner Agumon. However, he manages to do whatever is necessary to rectify the situation, and in times of need, save friends and family from certain doom. He is the bearer of the Crest of Courage. His representative color is Orange and elemental affinity is fire.
The adventurous leader of the group, Tai was always the first to jump into action though it often throws him into the path of danger. Agumon was the first Digimon to digivolve into Champion form, Greymon. However, his ambition to get Agumon to digivolve into Ultimate form soon gets him into trouble. He first overstuff Agumon with food. During their next battle, Tai delibrately walks into danger, knowing that Greymon would digivolve since he is in trouble. However, Greymon instead digivolves into SkullGreymon, his virus counterpart, and causes disaster, rampaging around and taking out Garurumon, Birdramon and Kabuterimon before regressing into an exhausted Koromon. As a result, both of them lose their confidence until Piximon comes by and helps them out. They realize that they need to keep strong and always come back after suffering defeat.
In the final battle with Etemon, Tai sees his crest of courage glowing and once again walks towards danger. Greymon is right behind him. This time, Greymon succeeds, digivolving into MetalGreymon and destroying Etemon. However, Etemon's destruction results in the formation of a dimensional warp. Tai and MetalGreymon enter the warp, which causes them to go back to the Real World and enables Tai to go home. Tai is having a blast, sitting back and relaxing, but when the news comes on he recognizes several Digimon in the Real World. He gets a message from Izzy, who warns him not to come back to the Digital World, but Tai knows that he must get back to fix the balance. When Tai sees Ogremon, Koromon digivolves into Agumon and a dimensional wrap opens. Agumon and Tai get sucked through and once again reenter the Digital World.
Upon his re-entry, Tai finds it in severe disarray. Time moves much quicker, and months have passed in the Digital World. The entire team has broken up and are moving their separate ways. Tai first locates T.K. and later connects with Matt and Joe in a diner. Piece by piece, he gathers the group up together.
By now, Myotismon has emerged as the next great threat, and he is in search of the eighth DigiDestined child. The DigiDestined pursue him to the Real World. Wizardmon finds the crest and the digivice and unites Kari and Gatomon. Gatomon digivolves into Angewomon and defeats Myotismon, but he comes back as VenomMyotismon. One of the DigiDestined believes that the key to defeating VenomMyotismon is to have Angemon and Angewomon shoot Tai and Matt with arrows of light. Both of them agree, and Gabumon and Agumon digivolve into MetalGarurumon and WarGreymon, both of whom defeat VenomMyotismon. The DigiDestined are shocked to see the Digital World appear in the sky. All eight of them open another warp and go back to the Digital World to restore the balance.
The Dark Masters emerge as the major enemy, and it is revealed that they were the ones who warped and rebuilt the Digital World. During this portion, Matt and Tai develop serious rifts in their friendship, which culminates into a major battle involving their Mega level Digimon. Matt leaves the group for a short while to reevaulate his place in the group. After defeating three of the four Dark Masters, Tai gets everybody together as one group to battle Piedmon, the last of the four. Showing true foresight, he refuses to allow any of the others digivolve in the battle against LadyDevimon, Piedmon's bodyguard, because he wants to save their strength for the ultimate battle. He also sends Sora and T.K. to round up Mimi, Joe, and Matt, all of whom left the group to find themselves. In the end, they triumph over Piedmon, but it takes the digivolution of Angemon into MagnaAngemon to do it. He leads the group against Apocalymon. Once he is defeated Tai and the others have to say goodbye to their Digimon friends.
Throughout the course of the programme he gradually realizes to be a true leader he must have the others' confidence and use empathy rather than reckless courage.