11th Seat of the Black Scripture

The 11th Seat of the Black Scripture. She is commonly known as the "Thousand Leagues Astrologer." She is in charge of providing intelligence support to her team.

Appearance
A woman with long blue hair tied with a braid and riding on a crystal. She has an open appearance enough to see her underwear. Her clothes were also described to appear as loose and sagging. She wears an abnormally large hat that hides most of her face.

Personality
The woman seems terrified about the horrible event that unfolded in the Katze Plains, where Ainz used his super-tier spell to massacre most of the Re-Estize's Army. She was described to be a listless woman in nature and does not like the idea of taking responsibility for herself while finding it annoying to shoulder. She hates taking the blame if everything goes wrong with the orders, hence, was very acceptable of having others take responsibility over her and her mistakes. She was the kind of woman who would rather listen to and quietly follow orders given to her by the higher-ups without resistance.

On the other hand, she apparently appears to be viewed by others who met her the first time as a tired woman. In public she walked, in a way which made onlookers believe that she did not want to walk at all or continue doing so. She can easily be annoyed by whatever questions Azuth were asking of her and her colleagues. Although she may act rude around some people like Azuth, she was ready to back off the moment her leader voice step in to stop them. She also agrees with how Azuth thinks of her as someone whose own thought process to be annoying.

Background
In the Theocracy, among her duties she handled, one of which was needing to inform the higher-up and everyone from her group about the revival of a monster like Catastrophe Dragon Lord. While so, it was revealed during the Massacre at Katze Plains, that another one of her duties is surveillance. This is presumed to be the case when the higher-up knows it was one of her duties to see how the recent war broke out between the Baharuth Empire and Re-Estize Kingdom and how it was ended by the Sorcerer Kingdom. At the same time, she has to write a report detailing anything or everything that she has seen throughout her task of observing the battlefield. This includes how many casualties there were after the end of the war and the different monsters she happen to saw on the job.

The Bloody Valkyrie Arc
She, along with the Black Scripture encountered a powerful vampire and tried to capture it but failed. Two of the Scripture’s members were killed, while Kaire received a critical injury. The Captain of the Black Scripture ordered her and the other members to retreat and leave it alone.

The Lizard Man Heroes Arc
She was briefly mentioned by Zesshi Zetsumei when talking about her prophecy of the Catastrophe Dragon Lord's revival with the Captain of the Black Scripture.

The Ruler of Conspiracy Arc
After observing Ainz's massacre of the Re-Estize Kingdom's Army at the Katze Plains alongside the Baharuth Empire, she became a shut-in, staying locked up in her room for an unknown period of time. One of the cardinals from the Theocracy thinks that she has fallen into despair or suffered some sort of shock. Presumably, the cardinal believes she saw something that not even the Godkins may stand a chance against.

The Witch of the Falling Kingdom Arc
Eventually, the Astrologer recovered from her trauma and accompanied her fellow Black Scripture teammates to the Re-Estize Kingdom during the height of its losing war against the Sorcerer Kingdom in order to recruit and save as many of the Kingdom's most talented adventurers as possibly by inviting them into joining and migrating into the Theocracy for their own safety.

The Astrologer in particular accompanied three other of her teammates in negotiating with the Kingdom's two Adamantite Adventurer Teams; Blue Roses and Red Drop's leader Azuth Aindra to join the Slane Theocracy. She sarcastically greeted Azuth with a mocking tone, but only to which the latter counters it with his own much to her frustration. However, when her colleague Quaiesse Hazeia Quintia steps in to stop the two from arguing any further, she simply give up the thought of provoking the Red Drop adventurer any further. Instead, she has decided to listen to his order as given since he is currently her leader for this kind of operation.

When Azuth asked which country they hailed from, she was about to give them a complete response but only to be stopped by her colleague the 12th Seat who lock her mouth shut with his hands. After Azuth demands personal opinions from members of the Black Scripture, she said it is much simpler for them to oblige by the higher-up's order and follow it through without question. She reasons it that any order given to her by her superior will be shouldered by them rather than her which she felt happy to have to do while receiving their praise.

Abilities and Powers
She seems to possess some form of surveillance magic from afar, identifying to some degree the number of soldiers Ainz Ooal Gown has under his command. While so, she is able to predict the Catastrophe Dragon Lord's revival. While so, she was in charge of providing intelligence support to her team, the Black Scripture. Based on the words from one of the Six Cardinals, it was highly suggested that the 11th Seat can record everything she observe while on surveillance duty. For instance, the 11th Seat had magically prerecorded the full, unabridged version of what she herself saw like the recent turn of events such as the Massacre at Katze Plains.

Quaiesse Hazeia Quintia
She appears to have a close, cordial relationship with the 5th Seat. She was ready to listen to his order the moment he intervenes in a bad conversation with the leader of Red Drop.

10th Seat of the Black Scripture
Her colleague, the 10th Seat was mindful of her behavior, reminding and whispering to her that no one in their meeting with the adamantite adventurers were complimenting her for what she does to be a good job.

12th Seat of the Black Scripture
Whenever the 11th Seat said something almost out of line, it was the duty of her colleague, the 12th Seat to stop her from speaking any further that may disclose information about the origin of their group. Her colleague was quick on the uptake to prevent what she said even if it mean he was to end up revealing his own presence in the process.

Ainz Ooal Gown
During the Massacre at Katze Plains, The Thousand Leagues Astrologer was assigned the mission to observe the battle and gauge the overall power the Undead Sorcerer King possessed. It was an assignment that lead her to having full blown nervous breakdown due to seeing the sheer power of a single spell the Sorcerer King has used. After witnessing the horrific event that have taken place with the summoning and the countless lives lost as a result, she had the sudden realization that even their two God-Kins of the Theocracy might not have a chance of beating him or his forces. Realizing all this, it ended up leading the 11th Seat to isolate herself in her room for days due to the shock, fear and terror she experienced.

However eventually, the Astrologer recovered from her mental trauma and eventually became mentally healthy enough to go on missions once again. As seen where she was able to brave going into the Re-Estize Kingdom in the height of its war against the Sorcerer Kingdom, implying she overcame her trauma to Ainz to a degree.

Trivia

 * In the Web Novel, she specializes in detection magic, being able to see through illusions and accurately judge an opponent's strength. She was also attending the victory ball in Arwintar trying to estimate Ainz's strength but failed as he was shielded. She did get a hint of the power of the Pleiades and Shalltear though.
 * In the Web Novel, the 11th seat was classified as a male.

Quotes

 * (To Azuth Aindra): "To bring whores along, how impressive, old man. This is not a love hotel though~"
 * (To Quaiesse Hazeia Quintia): "Quie-chan...sigh, Quie-chan is the lead this time so I'll just listen to you."
 * (To Azuth): "It doesn't matter which country we're from. It's all usele—"
 * (To Azuth): "What a bore — Aren't things much simpler if we just followed our superiors' order?"
 * (To Azuth):  That’s about right. As long as I carry out my orders, the responsibility for them will always fall on my superiors. It’s too annoying to have to shoulder responsibilities myself, so I don’t bother with it. I’m pretty good at shifting responsibilities onto others, I’ve even received praise for it~" ''
 * (To Quaiesse about Azuth and members of Blue Roses): "Quai-chan. What’s wrong? Are we not killing them?"