By October 2017, Levi was cast in the titular role.[54] In November, Grace Fulton joined the cast as Mary Bromfield, one of Billy Batson's foster siblings.[55] Fulton had previously worked with the same director on Annabelle: Creation.[56] Later that month, Mark Strong was in final negotiations to play Dr. Sivana.[4] Strong confirmed he would be playing the role by January 2018.[57] By November 2017, Asher Angel was cast as the titular hero's teenage originator Billy Batson.[58] In December, Jack Dylan Grazer was added as Freddy Freeman, Batson's best friend.[59] Later that month, Jovan Armand, Ian Chen, Faithe Herman, and Cooper Andrews were cast as Pedro Peña, Eugene Choi, and Darla Dudley, respectively,[60] with Andrews portraying Victor Vazquez, one of Billy Batson's foster parents.[61]