Why would Bomber be hanging out with two weaklings? Neither of them even had nen power that they used.
Also, why didn't Kilua fight Bomber? It seems like his abilities would've been better to use against Bomber since he was using ranged attacks but had a good way of defending himself.
I can see why Biske didn't want to fight him but honestly, Gon seems like the weaker of him and Kilua so wouldn't it make more sense for him to fight Bomber?