Great Ones are beings that were researched by Laurence and Willem. Little is known about their nature, their motives, and how many there are. Some Great Ones are elite Bosses in Bloodborne. The 6 Great Ones that the player can fight are listed below. Please click the specific page for more information.



Great Ones



Celestial Emissary

Location Upper Cathedral Ward
Drops Communion
Weaknesses Thrust, Bolt and Fire


Ebrietas, Daughter of the Cosmos

Location Altar of Despair
Drops Great Isz Chalice
Weaknesses Thrust, Bolt and Fire



Mergo's Wet Nurse

Location Nightmare of Mensis
Drops Third Umbilical Cord
Weaknesses Arcane, Fire, Bolt and Rapid Poison


Moon Presence

Location Hunter's Dream
Drops Blood Echoes (230000)
Weakness Arcane, Fire and Bolt


Rom, the Vacuous Spider

Location Moonside Lake
Drops Kin Coldblood (12) x1
Weaknesses Bolt, Fire, Arcane

    • Anonymous

      29 Jun 2017 17:50  

      Rom, Ebrietas, and The Celestial Emissary are all created, making them not true great ones, while Amygdala, Mergo's Wet Nurse, And The Moon Presence can only be fought in dreams and nightmares, and are not kin, but great ones, plus grant the NIGHTMARE SLAIN prompt at death

      • Anonymous

        18 Jan 2017 12:07  

        This is definitely inspired by HP Lovecraft's work. Cthulhu and his buddies. Cthulhu himself is one of the Great Old Ones although above them are Outer Gods.

        • Anonymous

          16 Jan 2017 21:09  

          This is wrong. Great Ones are defined as having ascended to a higher plane of existence. Ebrietas and Rom were "left behind", implying that she did not ascend, and the celestial emissary was created by the choir as a medium between them and the great ones. This is confirmed by the fact that all three of these characters are considered as "kin" by the game, whereas Mergo's Wet Nurse, the Moon Presence, and the Amygdala are not tagged as "kin".

          • Anonymous

            Eye Great One05 Jul 2016 14:54  

            The body of eyes in the nightmare of mensis is also a great one. And so is oedon who is formless though they aren't bosses.

            • Anonymous

              Order05 Jul 2016 14:54  

              Im told you need to beat these in order before ng+ to get all the chalices? Is this true? If so, in what order?

              • Anonymous

                WRONG!05 Jul 2016 14:54  

                Only Moon Presence, Amygdala and Mergo's Wet Nurse are Great Ones. They all bleed dark red corrupted blood, the old blood. The other ones are Kin of the Cosmos, those bleed serum, an ambarine substance, like the blue aliens found at Iosefka's. The Kin are mortals ascended, somewhere beetween mankind and the great ones. Just read the 90 pages article made by REDGRAVE. "The paleblood hunt". A lot of things made sense with that info.

                • Anonymous

                  Shouldn't mother Brain constitute a Great One too?05 Jul 2016 14:54  

                  The description for the living string ( explicitly calls her out as 'a legitimate Great One'. the 'Make Contact' gesture works on her and everything.

                  • Anonymous

                    I think this page needs an overhaul to include Great Ones that aren't bosses per se05 Jul 2016 14:54  

                    As it would turn out, there are a lot more than these five Great Ones. The Formless Oedon is mentioned in a lot of item descriptions, The Mother Brain is a Great One as evidenced in her item description. Then there's Mergo, the Moon Presence, etc.

                    • Anonymous

                      Maybe I'm reading a little too into this...05 Jul 2016 14:54  

                      But beings called specifically "Great Ones" are mentioned in some of Lovecraft's stories, namely the stories that used the theme of <I>dreams being alternate dimensions</I>. Not only that, but these beings where described as "weak gods of earth", in some ways they weren't even all that much above humankind. Perhaps the things we fight are not analogs to Lovecraft's "Great Old Ones" and "Outer Gods", but weaklings pulled into our realm by the half-mad members of Mensis, Byrgenwerth, and the Church.

                      • Anonymous

                        great one aspect theory05 Jul 2016 14:54  

                        I think every great one has a special aspect of action <br/> <br/>Plain Doll (IN MY OPINION SHE IS A HIGH RANKING GREAT ONE, NOT A NORMAL DOLL, PLEASE READ THE DOLL PAGE DISCUSSION [IS THE DOLL EVIL] FOR BETTER UNDERSTANDING) is the great one of blood <br/>Moon presence is the great one on night <br/>Oedon could be the ?great one? of ?day? <br/>Ebrietas the great one of ?animals? <br/>Celestial Emissary the great one of the other world <br/>Amygdala the great one of chaos and disorder <br/>Rom the great one keeper (every great one (amygdala can earlier with tonsil stone but without after Rom)can only be fought after Rom) <br/>Mensis brain or however the name is could be the great one of madness <br/>Mergos nurse the great one of the great one children <br/>tge great ones that we dont know are perhaps the brighter aspects like sanity, order, light, humans, and so on. <br/> <br/>I hope I didnt forgot one and didnt made much mistakes in my theory

                        • Anonymous

                          The Great Ones05 Jul 2016 14:54  

                          Killing "bacteria gods" as a human hunter is extremely satisfying. Who knows what else lies beyond the curtain. I'm ready for Bloodborne 2.

                          • Rom isn't a Great One (According to the item drop)05 Jul 2016 14:54  

                            Description of the Kin Coldblood (12) dropped by Rom: <br /><br/><br /><br/>&quot;Coldblood of inhuman kin of the cosmos,<br /><br/>brethren of the Great Ones.<br /><br/><br /><br/>Use to gain unspeakable Blood Echoes.<br /><br/><br /><br/>Dare not to delve into the world beyond humanity,<br /><br/>the eldritch Truth touched upon long ago at Byrgenwerth.&quot;<br /><br/><br /><br/>Brethren of the Great Ones, but not a Great One themselves. Or at least that's what the drop seems to suggest... it's nitpicking for sure but if Rom isn't actually a Great One, then she (apparently it's a she?) should be moved to the other bosses page.

                            • Anonymous

                              Great Ones05 Jul 2016 14:54  

                              The Celestial Emissary and Rom, The Vacuous Spider are not Great Ones themselves, they are kin of the Great Ones (check the description of the Kin Coldblood for Rom). The Celestial Emissary is a little murkier but it seems that it was in fact created by the Choir as an emissary from humanity to the Great Ones, to make contact as it were.

                              • Anonymous

                                Celestial emissary doesn't belong here (ending spoilers below)05 Jul 2016 14:54  

                                It is said only one (before the true ending) was able to morph into a great one successfully? That was rom Rom, a student. The celestial emissary on the other hand were orphans, which the choir experimented on (much like false doctor(ifoska?) experimented on her patients and turned them into the same being (jelly aliens!). They were our emissary to communicate to the great ones with (hence the name). They are only classified as Kin, not great ones themselves.

                                • Anonymous

                                  "Nightmare Slain"05 Jul 2016 14:54  

                                  I was under the impression that the bosses we kill which have the words "Nightmare Slain" after they die are the 'true' Great Ones, so to speak, and the rest are kin, ascended humans, children of the great ones, etc. For example: <br/>- When we kill the Moon Presence, the Nightmare Slain message appears immediately. <br/>- When we kill Mergo's Wet nurse, the Nightmare Slain message doesn't appear until later, when the baby stops crying. The baby is Mergo, the real Great One. If we use the music box before Mergo dies, it laughs a little. <br/>- When we kill the Orphan of Kos, the "Prey Slaughtered" message appears and then we go back to Kos(or some say Kosm)'s corpse and a black thing disappears during a cinematic and the Nightmare Slain message appears. So the Great One was Kos, not the Orphan. <br/>- No other bosses have the "Nightmare Slain" message after them. So I don't think they're Great Ones. <br/> <br/>Thoughts?

                                Load more