The Celts, who inhabited parts of northern Europe, Britain, and Ireland in ancient and medieval times, had a large cannon of myths that featured a mix of good and bad characters. There were brave warrior-heroes, like Cuchulain, who fought with blinding speed, and the wise and just King Arthur, creator of the renowned Round Table of valiant knights. In contrast, scary, dangerous beings roamed the Celtic lands, among them goblins, marauding zombies, and undead vampires.