Elle Fanning

Thia / Tessa

Matt Duffer

Kwei's Ship Computer (voice)

Alison Wright

MU/TH/UR (voice)

Cameron Brown

Drone Synth

Reuben De Jong

Father (Suit)

Stefan Grube

Kwei (voice)

Michael Homick

Kwei (Suit)

Ravi Narayan

Bud

Dimitrius Schuster-Koloamatangi

Dek / Father

Ross Duffer

Kwei's Ship Computer (voice)