User blog comment:AYET/The Strawhats at the next level up/@comment-10860731-20140418153055

I think that in the Kaido Arc or whatever it is called Doffy will come back and be like "I'm not done with you Strawhat!" and then Kaido will pummel him OR he will get "killed" by Kaido for failing his mission and then join the Strawhats in battling Kaido only to backstab them ( obviously).