First:
Cat (Neku) and Dog (Inu)
However, they will LOSE
Jack has his (hybrid) which he did NOT USE YET just like Neku and Inu (solung) which was not used. But still, Neku and Inu with their solung (which probably has a limited time because we can remember how Carrot was exhausted after few minutes from Solung). I believe that they will put down Jack, or to be more precise, they will THINK they put down Jack with their last strongest move. BUT, after few minutes, we see Jack standing back up like Doflamingo did with Law's Gamma knife, and we realize that this is actually because he's awakaned Zoan. He's able to recover faster as in Impel down stated. Which is why Jack no matter how many Ls, he gets, he keeps getting back up.
Then, we will have Jack humiliate Inu and Neku for few minutes before the interferance happens by Jinbe. Yes, you heard me. It'll be fishman vs fishman