I think the newly buffed Kingpin buff makes him more offensive with the fury stacks; but since they are passive, they can be nullified.. so most mystic champions which can nullify buff is going to be a good counter to him.
I could see KP being fairly annoying on brute force node, simply from that if he does get to SP2 and goes unstoppable, your list of slow/nullify champs that can also deal with not doing too many debuffs grows short.
SP2 bias + aggression: prowess could also be deeply unpleasant.
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SP2 bias + aggression: prowess could also be deeply unpleasant.
Just OTOH.