Ethan Herisse Elwood Brandon Wilson Turner Aunjanue Ellis-Taylor Hattie Hamish Linklater Spencer Gralen Bryant Banks Blakeley Fred Hechinger Harper Jimmie Fails Mr. Hill Luke Tennie Griff Bryan Gael Guzman Jaime Daveed Diggs Adult Elwood Sam Malone Percy Najah Bradley Evelyn Taraja Ramsess Rodney Zach Primo White Boy Bryant Tardy Desmond Robert Aberdeen Mr. Goodall Escalante Lundy Earl Ja'Quan Monroe-Henderson Black Mike Rachel Whitman Groves Nurse Scarlet Billy Slaughter Dr. Cooke Lucy Faust Mrs. Hardee Tanyell Waivers Denise Craig Tate Adult Chickie Pete Sara Osi Scott Millie LeBaron Foster Thornton Larry (uncredited) Bash Luks Boy at Playground Martin Luther King Jr. Self (archive footage) Sidney Poitier Self (archive footage) Tony Curtis Self (archive footage)