No. 1 counter would be Techniloom with Mach Punch OHKOing this guy.
With this I believe that a SubSD set would be viable.
EDIT: On the counters: you should add any MachPunch users such as techniloom (no. 1!), conkeldurr and infernape since they have a chance to revenge kill this guy.
Knicks and knees just don't get along, and until mankind learns to play basketball without using the knees, the Knicks will never win that elusive championship.