Nyx

"Darkness guide you, child. You have outgrown this house, of that I am now certain. Should you return again here, I shall keep you safe."

- Nyx Nyx, sometimes referred to as "Mother Night", is the personification of night and a resident in the House of Hades. She is the mother of twin gods Hypnos (Sleep) and Thanatos (Death), of Eris (Strife), Nemesis (Retribution), and many others. She is also the caretaker of Zagreus.

After Persephone left the Underworld, Nyx became Zagreus' main caretaker. She curried favor with the Olympian Gods and gave Zagreus the Mirror of Night to aid in his escape.

She holds a managerial role in the House (leaving bureaucracy and ruler-ship to Hades), and can be seen giving counsel and direction to Megaera, as well as giving orders to and reviewing the day's work with Dusa.

Affinity
If given Nectar, Nyx will give you the Black Shawl.

After giving Nyx 6 Nectar, she cannot be given any more gifts until you complete a favor for her.

Once you have completed the favor, she can be gifted Ambrosia, although she does not give a Companion in return.

Nyx's affinity gauge is maxed out at 9 hearts, requiring the gifting of 6 Nectar and 3 Ambrosia total.

Favor
Nyx's favor is part of the Fated List of Minor Prophecies and requires you to reunite her with Chaos. At some point, Nyx will tell you that she has sensed Chaos' attempts to communicate with her. She will later inform you that the bridge to Chaos cannot currently be accessed through the eldest sigil in the administrative chamber, but you can change this using a certain amount of Darkness. An upgrade will become available at the House Contractor, requiring 3142. The reason for the precise value is not known, but it is the constant pi rounded to four digits times one thousand, and also the total number of greek gods according to the Theoi Project. Previously, the value was 8888. Once purchased, Nyx will then use the eldest sigil to visit Chaos' realm, and you can even encounter her there in your run. When she returns to the House of Hades, her affinity gauge will no longer be locked, and you can give her Ambrosia.

Codex entry
Unlocking the complete Codex Entry requires deepening Zagreus' relationship with Nyx.

Quotes
"For quotes and dialogue regarding, please refer to /Quotes."

Relationships
Hades: Hades and Nyx manage the domain together. They mostly tolerate and begrudgingly respect each other, though it seems that Hades holds some power over Nyx, as he controls the punishment of Titans and primordial gods. Nyx appears to have some kind of arrangement with him, to have avoided a similar fate for herself.

Zagreus: Nyx cares for Zagreus as if he is her own child. She fully supports his decision to leave, and helps him by giving him the Mirror of Night and contacting the Olympians on his behalf.

Persephone: Persephone and Nyx shared a friendly relationship during Persephone's time as Queen of the Underworld prior to Zagreus' birth. Nyx describes Persephone as respectable and stately, while Persephone was grateful for Nyx's company and support during her initial time in the Underworld, later stating that she missed her and Cerberus the most out of all the denizens of the Underworld. Upon Persephone's return to the Underworld, the two of them continue to be on good terms, with Persephone being grateful for Nyx's part in engineering her reuniting with Zagreus and her role as his foster mother in her absence.

Megaera: Nyx acts as Megaera's advisor and direct employer. She consoles Megaera and reminds her of their duty to the House.

Thanatos: Nyx seems to have a positive relationship with her son. He offers to help with matters in the House, but she instead encourages him to continue helping in his own way.

Hypnos: Believing that Hypnos is too dependent upon her, Nyx endeavors to foster independence in her son by maintaining distance in their relationship; she instructs him not only to refrain from calling her 'Mom' in the Great Hall, which he is wont to do, and asks him not to engage her in conversation. She presumes or anticipates to some extent that others will find Hypnos' disposition dislikable, as she will, without prompting, offer to chastise Hypnos on others' behalf. Moreover, it is apparent that Nyx rarely imparts praises upon Hypnos: when she does tell him his "efforts are to be commended" for the first time, Hypnos assumes she means someone else commended him and makes several guesses as to whom—going so far as to guess Hades without Nyx once occurring to him as a possibility. Nevertheless, Nyx's attempts to encourage Hypnos' independence appear to stem from maternal care just as much as they may stem from her continued concerns over Hypnos' work ethic; she is expressly reassured to see Hypnos proving himself capable, and what boundaries she sets for him are ones she believes to be in his best interests, regardless of his opinion.

Chaos: Nyx is somewhat regretful about being so estranged from her own parent, as they have not talked to each other since the beginning of creation. This was due the expectations Chaos had laid onto Nyx, and due to Nyx's being occupied with her work and forging her own path. Zagreus may choose help her reunite with Chaos, and the two will be able to rekindle their relationship.

Dusa: Nyx disapproves of Dusa for her tendency to overwork herself and for associating with Zagreus. She later removes Dusa from her job without warning. It is when Zagreus intervenes that she is persuaded to allow Dusa to work in the House again, although not without "certain stipulations".

Olympian gods: The Olympians look down on Chthonic gods as a whole.


 * Ares mentions that Nyx is ill-liked upon Olympus, though he has always longed to meet her, partly due to a sense of gratitude in her role in his own work. After enough interactions with the both of them, he will reach out to form a correspondence with her.
 * Athena seems to be on good terms with Nyx, being one of the first Olympians to respond to the latter's plea to help Zagreus. At one point, she confesses that she sometimes envies Zagreus' relationship with his (foster) mother, having never had one herself.
 * Zeus seems to believe that Nyx is Hades' concubine.

Additional notes
Nicte