Anzhog- he is attacker and hiller, but as less enemies on the field as less he makes hilling, and even if he is alone on the field, he also hills with just 20% of its damage. Thats just 250 of health maximum.
Red Hood- her only plus is her fox minions, that makes 7% of hilling each turn. But they are so week. And her attack is for hans lugg.
Gravemaker- its a pop star of defense.
So, peoples, whom better to level up from this 3 heroes?