A test subject resembling a slightly large black slime with a single eye in the center. He is strong enough to escape whenever he chooses. He cannot speak.

A tall, humanoid-like subject. Ribs wrap around his chest, and he has very long limbs. His O-shaped mouth is filled with razor-sharp teeth. Despite having no eyes or ears, his hearing is exceptionally acute.

Star Light claims it is small now but will grow massive later. The lotus controls vines. It is expected to grow large if watered; if a corpse or non-living matter is nearby, it can wrap them in vines to create new vine monsters.

A subject with a round body, a smiling mouth, and four tentacles. She has a lightning-shaped scar on her head. She is the first subject confirmed to have a gender. She cannot speak, is known to lay eggs, and is capable of cannibalism. Appears to be female.

A subject with white skin, holes all over his body, and rebar-like legs. He seems to fear the Architects. He cannot speak. You must never show him your back until you leave the containment cell, nor should you stare at him for too long.

(Does not appear if the "Sun Light" chat profile is selected) One of the Architects, male. He has a psychopathic personality. His entire body is a red outline that glows red in the dark. His face is shaped like a sun. He is currently kept with both arms bound in prison for a certain incident.

(Does not appear if the "Moon Light" chat profile is selected) One of the Architects, female. She has a kind personality and speaks politely. Her entire body is a light blue outline that glows blue in the dark. Her face is moon-shaped with only eyes visible.

(Does not appear if the "Star Light" chat profile is selected) One of the Architects, female. She has a playful personality and a yellow body outline. Her face is star-shaped.

One of the Architects, gender unknown. He glitches and sometimes speaks in incomprehensible words. His entire body is made of glitches and constantly flickers.