(Fourth Hokage): The sensei of an earlier version of Team 7, which included Kakashi, Obito , and Rin .
(Sixth Hokage): The original sensei of the most famous iteration of Team 7. Team 7
(Third Hokage): While not a member of the "Team 7" we see most often, he was the sensei of the Legendary Sannin ( Jiraiya , Orochimaru , and Tsunade ), who are often referred to as the first "unofficial" Team 7 because they were the only ones to survive a specific attack during the Second Great Ninja War. (Fourth Hokage): The sensei of an earlier version