Blu Hunt
Dani Moonstar
Maisie Williams
Rahne Sinclair
Anya Taylor-Joy
Illyana Rasputin
Charlie Heaton
Samuel Guthrie
Henry Zaga
Roberto da Costa
Alice Braga
Dr. Reyes
Adam Beach
Dani's Father
Happy Anderson
Reverend Craig
Dustin Ceithamer
Smiling Man
Marilyn Manson
Smiling Man (voice)
Thomas Kee
Sam's Father
Colbi Gannett
Young Illyana
Jacinto Vega SpiritWolf
Frozen Cheyenne
Mickey Gilmore
Coal Miner (uncredited)
Jeffrey Corazzini
Coal Miner (uncredited)