Karlach is a Zariel Tiefling. She has red skin, black hair, one horn broken off, a fiendish tail, and orange eyes. She is rather tall and muscular as well. Instead of a heart, she has an infernal engine in her chest that burns as hot as Avernus. Karlach is very sweet, kind, joyful, energetic, passionate about life, and will to protect her friends no matter what.