Summons for Hokages
As most of you are aware Sandaime (the third hokage) can summon Enma, the monkey king (and probably various other equipped monkeys). I believe the Fourth summons the frogs (like gamabunta).
So do any of you know what the other Hokages like the First and Second summoned? If you don't know, what do you think they would have summoned (what would've been cool)