Supernatural Characters are a special class of Character identified by Black Hearts displayed for their health, instead of the regular Red Hearts. These unusual Characters are invulnerable to all regular damage, except for that from Black Weapons and certain Explosive Weapons.
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| Ghost | Spooky Girl | Wacky Witch | Witch |
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| Zombie | Zombie Businessman | Zombie Cheerleader | Zombie Pirate |
Not all traditionally "Undead"-types are considered "Supernatural" (ie, have Black Hearts and the corresponding invulnerability):
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| Mummy | Mummy Warrior | Skeleton | Skeleton Fish |
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| Skeleton Horse | Black Skeleton Horse | Glowing Skeleton Horse |
Vampires and Werewolves are each their own separate special types with their own special invulnerabilities.