Unlike other Kage, the Mizukage are the only leaders not known to be related by blood to one another.
No discussion of the Mizukage archive is complete without addressing the contentious role of "filler" content. In the original manga, the history of the Mizukage is sparse. The anime, however, produced the Past Arc: The Locus of Konoha (episodes 347-361), which included extended flashbacks to the Third Mizukage and the civil war within the Mist. Similarly, the Chūnin Exams filler arc in the original Naruto anime first hinted at the Seven Ninja Swordsmen of the Mist, indirectly building the Mizukage’s military legacy. naruto xxx mizukage archive