Board Thread:Theories and Speculation/@comment-26379028-20150531155829/@comment-6036561-20150602083044

I agree on the First Mizukage being a swordman, probably the creator and first user of all the seven swords (and the scroll that contains them all)

On the Third Mizukage, I think he used a blood-manipulation jutsu (either a Kekkai Genkai or ad Hiden). We have seen that Kirigakure was called "the Bloody Mist" since before Yagura put up his graduation exam, so I have the feeling that the beginning of the "Bloody Mist" nickname is related to the Third Jutsu.

For the First Tsuchikage, we know from the anime filler that he used jutsus based on bee manipulation. I'm not sure Kishimoto would make canon this chioce, but since he even used Useless Raiga for the first generation of Swordmen of the Mist, why not?

I like Tzao's idea on the First Raikage using sound jutsu, maybe a still unsee Advanced Nature transformation, one of the missing two (Lightning + Wind maybe)

The Second Raikage is the one that gives me mor trouble... I can guess that either he uses his armour in conjunction with Magnet Release as a weapon (for who watched "the Legend of Korra", kinda like what Kuvira did) or developed the Lightning Release armour and used it whit a sword technique.

The First Kazekage gives me the feeling of a taijutsu user, maybe empowering his own sheer strength with an elemental jutsu.