Aron Eli Coleite Creator, Executive Producer Joy Bryant Helen Grace Actor Christian Slater Mulgarath Actor Lyon Daniels Jared Grace Actor Noah Cottrell Simon Grace Actor Mychala Lee Mallory Grace Actor Jack Dylan Grazer Thimbletack Voice Holly Black Executive Producer Tony DiTerlizzi Executive Producer Ellen Goldsmith-Vein Executive Producer Jeremy Bell Executive Producer D.J. Goldberg Executive Producer Kat Coiro Executive Producer Grace Gilroy Executive Producer Julie Kane-Ritsch Executive Producer Rachel Raimist Director