Kristen Stewart

Frankie / Frances

Alia Shawkat

Molly

LaKeith Stanfield

Not Metal Head Dave

Zack Fox

Josh

Tony Hale

Martin Flynn

Chris Estrada

Jose

Thomas La Barbera Christensen

Axel

Thor Knai

Dagmar

Thomas Nicholson

Fritz

Seth Rogen

Dio (voice)

Kumail Nanjiani

GG (voice)

Kate McKinnon

Dr. Olsen