King is a cold-hearted, power-hungry Darkner with little compassion towards his subjects and only considers his own wishes. He’s intimidating and strong and isn’t afraid to hurt others to get what he wants. He has a strong disdain towards the Lightners and believes they’re enemies to him and the other Darkners.

King has a low, gravelly, and imposing voice. He's a very sadistic and cruel character, and if he isn't bellowing angrily, he's laughing mockingly at his victims. A good performance has a deep, commanding voice that strikes fear into the hearts of the audience.