Korg as we know is already going to be an ass pain of a defender with his thorns and rock shield. But now we have info on his base stats.

As you can see he has a huge health pool. I say he is going to be a good mini boss selection and not as a boss, because I still believe they are much better options for the final boss. Infinity Man, Cable, Medusa, etc.
Get your hands on one of these guys. It'll help in the long term, especially with seasons.