Lee Sung-jin Creator, Executive Producer Oscar Isaac Josh Actor Carey Mulligan Lindsay Actor Charles Melton Austin Actor Cailee Spaeny Ashley Actor Youn Yuh-jung Chairwoman Park Actor Song Kang-ho Dr. Kim Actor Jang So-yeon Eunice Actor William Fichtner Troy Actor Mikaela Hoover Ava Actor Matthew Kim Woosh Actor Steven Yeun Danny Cho Actor, Executive Producer Ali Wong Amy Lau Actor, Executive Producer Joseph Lee George Actor Young Mazino Paul Actor David Choe Isaac Actor Patti Yasutake Fumi Actor Maria Bello Jordana Forster Actor Jake Schreier Executive Producer