Presence

Presence is one of four bosses that can appear within the Archives. There is also a basic enemy called an Insubstantial, which looks exactly like Presence but is much less powerful. It can spawn and attack the player at random as an effect of a Curse of Paranoia, and appears in some rooms on floor 6 and below.

Hard Mode
Presence features two unique attacks in its hard mode variant. It will still start the fight with the same attack as before, but after that it can use any of its attacks. The initial burst of offset rings will happen before every attack, but on hard mode, there are 4 rings instead of 2.