Sub-Zero is at his best in H2H combat on the ground. With this in mind, Sub-Zero can attack quickly, with some decent damage to boot. This makes him VERY effective at combos, but he isn't "lacking" in other areas either. Sub-Zero is at his best in H2H combat on the ground. With this in mind, Sub-Zero can attack quickly, with some decent damage to boot. This makes him VERY effective at combos, but he isn't "lacking" in other areas either.