I was thinking the same thing , Hiruzen is like 20 years older than the sannin

So he became a Rob, good for him bad for others, I do love how all the universe are linked

What a great way to go! Cell from dragon ball abridged would be proud!

And just like Joichiro in Shokugeki no Soma after defeating 50 people alone , he gained the nickname Asura

Duel? Pffff, good old fashioned violence that the way to do this. If Yugi punched everyone of is ennemis, the show would have been way faster