everyone says chompy is easy to deal with, which is true in theory if hes in the middle of your crew.
but early game he tends to be shielded from dreamer, plus he has terrifying 12 (so for most people a 7 to hit) and I know I play him with butterfly jump. on top of all that he has soulstone use, regen 2 and can heal everytime you fail a WP check engaged with him.
so to take chompy down you have to have a good hand and some really good damage plus concentrate on him alot, preferably after he activates.