Garp = Overhyped and nothing to show for it, plus he is the worst grandfathet EVER
"I want my two grandsons to become Marines so lets have them raised by Murderous bandits"
The flashback isn't over yet, we can't be sure if it is the only reason why he entrusted them to Dadan. And I don't think he is overhyped, but that Aka Inu and the other admirals don't get the love they deserve in this forum.
No matter who the opponent is, they shouldn't get raped this way.