Emily Watson

Mother Superior Valya Harkonnen

Jessica Barden

Young Valya Harkonnen

Olivia Williams

Reverend Mother Tula Harkonnen

Emma Canning

Young Tula Harkonnen

Travis Fimmel

Desmond Hart

Mark Strong

Emperor Javicco Corrino

Jodhi May

Empress Natalya Arat

Sarah-Sofie Boussnina

Princess Ynez Corrino

Josh Heuston

Constantine Corrino

Jihae

Reverend Mother Kasha Jinjo

Yerin Ha

Young Kasha Jinjo

Tabu

Sister Francesca

Charithra Chandran

Young Francesca

Chloe Lea

Sister Lila

Jade Anouka

Sister Theodosia

Faoileann Cunningham

Sister Jen

Aoife Hinds

Sister Emeline

Chris Mason

Keiran Atreides

Shalom Brune-Franklin

Mikaela

Edward Davis

Baron Harrow Harkonnen

Mark Addy

Evgeny Harkonnen

Cathy Tyson

Mother Superior Raquella Berto-Anirul Atreides

Camilla Beeput

Reverend Mother Dorotea

Brendan Cowell

Duke Ferdinand Richese

Laura Howard

Duchess Orla Richese

Tessa Bonham Jones

Lady Shannon Richese

Charlie Hodson-Prior

Pruwet Richese

Barbara Marten

Sister Avila

Sarah Oliver-Watts

Young Avila