【How-to】How strong is zesshi zetsumei

2) Rubedo = Among all of the denizens of Nazarick, Rubedo is the strongest and most powerful NPC that can overwhelm Ainz Ooal Gown with full equipment, and stronger than Touch Me. Rubedo is also one of the four close combat specialist NPCs (Cocytus, Albedo, Sebas Tian) and of course, the strongest among them.