cast // mild spoilers, marked where it matters
A cast of six or seven people, depending on how you count the ones who come back. Names, designations and what each of them is actually after.
MagpieKosmo-Pioneer
Generation 5 ship technician and the character you control. LSTR stands for Landvermessungs-/Schiff-Techniker Replika — land survey and ship technician. Built for the Penrose programme because the units are adaptable and survive badly isolated conditions; in practice that means combat engineer, repair tech and the only person still walking.
178 cm. Blue eyes. Wakes up in a crashed shuttle with a promise she cannot fully recall.
Radio officerRotfront
Born on Leng, raised on Rotfront by her mother Iris Yeong, a radio officer stationed at Rotfront Interplanetar Station 06. Drawn to art, mostly painting, in a world that had little use for it. Assigned as pilot of the Penrose-512 — the kind of posting the Nation hands out quietly.
Red eyes. Personal record key YNGARN-L-5921D. The person Elster is really looking for.
Shop assistantSearching
From Vineta, grew up in Rotfront Block Sector C, worked in her parents' bookshop. She is in the facility for the same reason Elster is anywhere: looking for someone. In her case, her twin sister Erika — and she does not take direction well.
Green eyes. Personal record key ITISLD-V-560524.
StudentMissing
Isa's twin, a university student. She once interrupted a group of bullies in the library to defend a girl — a small kindness that the game keeps returning to, and that Isa still resents being on the outside of.
Personal record key ITERIK-V-560524.
Vinetan War veteranUnreliable
A worker at Sierpinski S-23 and a war veteran. She is the face on Elster's photograph for the first half of the game, which is exactly the problem: whether Alina is a separate person, a borrowed memory, or something the facility is using to keep Elster walking is the most argued-about question in the fandom.
High commandAdministrator
Administration-, Datenverarbeitung-, Logistik-Replika — administration, data processing, logistics. A Protektor Führungskommando administrator unit. The one who meets Elster at the red gate and tells her, plainly, what crossing it did to Falke.
BioresonanceFacility commander
Führungskommando-Leiteinheit-Replika — high-tech bioresonance command unit, and the commander of the Protektor security forces in AEON facilities. Every facility has one. S-23's went through the gate before Elster did, and came back wrong: “she saw something that made her fall sick”.
BioresonanceElite Protektor
Kommando-Leiteinheit Bioresonanztechnik-Replika — commando control unit. Uses bioresonance to hold a squad together and keep its members mentally stable. Reads as the friendliest voice in the building, which is not the same thing as safe.
Every Replika designation is a German bird: Elster (magpie), Adler (eagle), Falke (falcon), Kolibri (hummingbird), Eule (owl), Star (starling), Storch (stork), Mynah, Ara (macaw), Kranich (crane). Full breakdown, with generations and roles, is on the Replika registry page.