Spensa - Caitlin Carmichael (maybe?)
Jorgen - Caleb McLaughlin
Kimmalyn - Madison Reyes or Maitreyi Ramakrishnan
Arturo Mendez - Marcus Scribner
FM- Madison Iseman
Hurl- Lily Rose Depp
Cobb - Delroy Lindo or Jooaquin Phoenix
Judy - Thandie Newton or Gillian Anderson
Becca Nightshade - Betty White or Helen Mirren
Spensa's mother - Vanessa Kirby
Algernon Weight - Idris Elba
Jeshua Weight - Regina King