The 3 Architects are the lights you see in The Backdoor, The Hotel and The Rooms being Curious Light and Guiding Light, the Third Light has no confirmed/known name.
Guiding Light
Guiding Light helps players to beat the game and highlights progressive stuff such as Keys, Levers, Books and Circuit Breakers and it/she also highlights doors in dark rooms if the player doesn't have any light source. Guiding Light will also highlight the doors during Seek Chase.
Guiding Light's symbol could be Moonlight.
Floors found in:
Curious Light
Curious Light also helps players but with less helpful information about entities and doesn't highlight anything except the A-000 Door and EXIT Door from The Rooms sub-floor.
Curious Light's symbol could be Starlight.
Floors found in:
Third/Mischievous Light
Third Light is a unknown light with no known name that was mostly not shown in the game but it is theorized that it is going against players and it is shown when the Crucifix fails on banishing Seek and Figure. It could possibly be Mischeivous Light from the Tower Heroes Event.
Third Light's symbol could be Redlight.
Floors found in:
Theory
- Curious Light was supposed to be the Guiding Light but it/he was more curious than guiding players and Guiding Light came and has been chosen to assist players/humans since it/she is helpful than Curious Light.
- During The Library cutscene, Guiding Light probably broke the lamp to distract Figure to think its a player.
Gallery
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The painting.
- NO MORE ROOMS NOOB.png
A barrier that blocks The Rooms when modifiers are active, it is presumed to be the Third Light blocking.
Curious Light highlighting the entrance to the Rooms.
Guiding Light highlighting a door in a dark room.