First off I have to say Sabo is alive. Now thats out of the way, A few chapters we saw Hack the fishman talking to someone on a Den Den Mushi. What if he was talking to Koala? And if Koala is the sub Fishman Karate teacher of to Army what if Hack is the first teacher? He said he was looking for something maybe he was looking to destroy the secret port For the revolutionaries?