Team Minato

Team Minato was a team that was headed by the future Fourth Hokage, Minato Namikaze with Kakashi Hatake, Obito Uchiha and Rin Nohara being the members of the team.

History
In the Kakashi Gaiden, which was set during the Third Shinobi World War, the team went to Kusagakure to destroy Kannabi Bridge to cut off supplies for Iwagakure ninja. Rin was captured by Iwagakure ninja during the mission. Kakashi and Obito rescued her but Obito was crushed by a cave-in caused by the Iwagakure ninja Kakkō. Obito gave Kakashi the Sharingan from his left eye and tells Rin and Kakashi to flee, before the second cave-in seemingly killed him with both Rin and Kakashi escaping to safety while being left grief-stricken by Obito's death.

However, in reality, Obito was saved by Madara Uchiha and was recuperating for an unknown period of time while hoping that he would be able to return home to his village despite Madara telling Obito that the injuries Obito had sustained would ensure that Obito would never become a fully-fledged shinobi ever again.

Some time later, Rin was captured and made the host of the Three-Tails. Knowing of her true purpose yet unable to kill herself, Rin, desperate to save Konoha from being destroyed opted to commit suicide which she achieved by impaling herself one of Kakashi's Lighting Cutter attacks which ultimately cost her her life and left Kakashi devastated, the two being unaware that Obito who had arrived on scene had witnessed Rin dying at Kakashi's hand. While Kakashi passed out due to exhaustion, Obito, unable to cope snapped and in a state of grief and rage, responded by going on a rampage where he brutally and mercilessly slaughtered all the Blood Mist ninja on sight with the events turning Obito into a disillusioned shell who soon became hellbent on creating a World of Dreams.

Some time later, Minato would sacrifice his own life to seal away the Nine-Tailed Demon Fox, who was released on Konoha by the masked man who was Obito in disguise. After Minato's death, Kakashi believed for a long time that he was the sole survivor of Team Minato.

However, during Fourth Shinobi World War, Kakashi was left stunned when he and everyone else discovered the mysterious "Tobi" was actually Obito in disguise. After being reincarnated by Orochimaru, Minato arrived at the battlefield and soon learnt the truth that his former student had been alive the whole time while realizing his student's role in the Nine-Tails' Attack on Konoha with Minato regretting what had happened, silently stating that if he'd realized that the masked man was Obito, then things would have been different.

When Obito, the Ten-Tails' jinchūriki was defeated, Minato managed to stops Kakashi, who only wanted to take the finishing blow, from killing his other student. The three then talked about the past, their regrets over Rin's death and how everything had turned out. Near the conclusion of the war, Obito sacrificed himself to save Naruto from a killing blow much to everyone's horror and shock. Using his Kamui and some of the Six Paths' power he stole from Madara, Obito's soul returned and temporarily merged itself into Kakashi, letting the jōnin use his powers his powers to help Team 7 defeat Kaguya Ōtsutsuki. Upon the war's conclusion, both Minato and Obito's souls moved on to the Pure World, leaving Kakashi as the team's sole survivor.

Trivia

 * The team makes a cameo before their actual introduction in chapter 122 and Naruto episode 72 during a flashback of the Third Hokage, and on the cover of chapter 16.
 * Kakashi noted many times that the current team he looks after shares similar dynamics to his childhood group. The resemblance is furthered with a photograph of Team Minato being nearly identical to the photograph of Team 7.
 * Aside from Kakashi, all members of the team became a jinchūriki at one point or another.