Mark Fischbach
Simon

Caroline Kaplan
Ava

Troy Baker
David

Elsie Lovelock
SM-8 Research Lead / The Speaker (voice)

Elle LaMont
SM-8 Research Assistant / The Whisper (voice)

Mick Lauer
The Guy Who Told You to Cross the Wires (voice)

Dave Pettitt
The Father

Holt Boggs
Eden Soldier

Isaac McKee
Young Simon

Roman Parsons Crow
Child of Eden

River Van Coleman Crow
Child of Eden

Townes Blaine Crow
Child of Eden

Asher Wagh
Child of Eden

Kazuki Jalal
Child of Eden

Alanah Pearce
A Familiar Voice (voice)

Seán McLoughlin
Jack

David Szymanski
David Szymanski

Danielle Evon Ploeger
Tow Ship Pilot

Rahul Kohli
Additional Voices (voice)

Ethan Nestor
Additional Voices (voice)

Valkyrae
Additional Voices (voice)

Mika Midgett
Additional Voices (voice)