She is the director of Roscaelifer's Airspace Patrol Department, and one of the three parts that "Sunbringer" split herself into, along with Dracaene and Eldreda. Sunbringer is known to have turned herself into three separate entities: Eldreda Sunbringer, Lindverne Sunbringer, and Dracaene Sunbringer. These three occupy primary leadership positions in three of the five central departments of Roscaelifer, along with overseeing the other two together. Sunbringer is noted as being alive, but current ambiguity surrounding these three leaves her exact status unknown.

Delta makes her appearance right after Sirin's magic practice ends, wanting to see the Ether Anchor in her possession, as she needs it to complete her mission. Sirin wonders whether the intel she received was fake and that the stone in her possession isn't an Ether Anchor at all, but Delta denies it, saying that there aren't many things that look like an Ether Anchor in the bubble universe besides the stone, and that it's also different from others she has seen as the one in her possessed by Sirin appears to contain no energy at all. As Sirin was contemplating to herself, something fell out of one of the books, which had turned out to be half a semitransparent bookmark that Delta had picked up and returned to Sirin, while remarking that Sirin's temper reminds her of a frustrated sheep before promptly leaving the room. She immediately returns, reminding Sirin that someone would like to take her to go see the real master of Hyperion, and leaves the room again. After the experiment, Delta becomes much calmer and more serious, her demeanor having become more akin to Liliya's. She had PTSD. Every time she fell asleep, she remembered the day her sister, Liliya, sacrificed herself to help Delta. She also shows annoyance when called by her real name. After meeting the Captain and being invited to join the Captain's Hyperion Crew, Delta starts to show her true colors. While with the crew, she started to socialize more on the Hyperion ship; she befriended every crew member. Delta also often plays games with Sirin and Bronie. Even though Delta rejected the offer to join the crew, she is still invited by the Captain's Hyperion crews when they hold a party on their ship.

C.C. was the leader of the Geass Order before disappearing due to the murder of Marianne and the leader of the Order of the Black Knights until she returned Lelouch's memories. She was also the one who gave Geass to Leila Malcal and Lelouch. She's quickly shown to be stubborn, selfish, and headstrong, as well as possessing high standards, which Lelouch takes note of and teases her about from time to time. Ironically, she claims to hate stubbornness, despite being quite stubborn herself. Though, it appears she notes these qualities to be essential to her sense of self, saying "That is what makes me C.C." in reference to them. She's shown to be pragmatic, focused on fulfilling her "contract" with Lelouch, which also serves to show her selfish side. Early on, she was willing to shoot Lelouch to hold him back from meeting Cornelia's challenge to him. In the second season, she suggested that Lelouch use Geass on Nunnally to bring her over to his side. She's also shown to be isolated, preferring to act alone to solve personal matters and being quite snarky and dismissive towards most people. C.C. can also be very secretive, to the point of being on par with Lelouch, albeit much less coordinated than the latter. C.C. is immortal, healing from any kind of wound (implied to include beheading) with enough time. She also doesn't age. Apart from her immortality, C.C. has the ability to bestow people with the power of Geass, which manifests differently in each person but generally carries the ability to affect the minds of those it is used on in some way. A Geass sigil appears on her forehead whenever she manifests this power, and she has a similar scar on her left breast. Her powers caught the interest of Britannia, who imprisoned her for experimentation purposes. Nonetheless, C.C. also possesses some positive thoughts on life as well. One recurring topic she comes to discuss with Lelouch is the nature of love.

Graphia is a mysterious figure and the subject of many legends. She once saw the Astral Express crash on Planarcadia, and it inspired her to fight against her adoptive father, Asat Pramad, wishing she could be one of the Nameless one day. She invented the art of creating imagenae, also known as imagenesis. Alongside that, she created the artwork "Worldbreaker Waves," which is now located in Graphia Academy. She is currently alive through her connection with the barrier that protects the World in Canvas. Asat Pramad found Graphia as an infant on the verge of death among the ruins of Planarcadia over a thousand years ago. Seeing her cold and lifeless body reminded him of the Parable of the Masked Fools: Aha climbed the highest branch of the Imaginary Tree and saw the void, the stars operating like machinery, and how meaning bows before nothingness. Aha continued looking until THEY saw a baby fall to the ground and cry. This led Asat to infuse Graphia with the power of Destruction, rebirthing her as a Voidranger. He then taught her to paint monstrous beasts using the power of the Voracity in order to carry out the Antimatter Legion's will. Eventually, the Astral Express crashed on Ahatopia and stood like an infinite tower which also became the inspiration for her name, "Murata." Witnessing the surviving Nameless battle the monsters and protect the people of Ahatopia, Graphia underwent a change of heart and betrayed Asat Pramad, choosing instead to save the Ahatopians alongside the Nameless. In Amber Era 2148, she later entered the Phantasmoon Games in and, together with seven other Supplicants and Evanescia, managed to temporarily halt Asat Pramad's advance. Gathering all the Wishpower she could, she ultimately sealed Ahatopia within a special two-dimensional plane, ensuring that Asat Pramad could never reach the sealed fragment of Oroboros at the world's core. Subsequently, she went into a slumber within the deepest reaches of the scroll.

Mermaids are mythical half-human, half-fish creatures that have appeared in the folklore of seafaring cultures worldwide for thousands of years. While modern media often portrays them as gentle and romantic, traditional folklore depicts them as powerful, deceptive, and frequently dangerous spirits of the water. They are famous for their enchanting, hypnotic singing voices, which they use to distract crews, causing ships to crash into treacherous rocks. Spotting a mermaid was an omen of bad luck, as they were believed to command the ocean to summon violent storms, shipwrecks, and floods. Unlike humans, traditional mermaids were often thought to lack a soul. Mermaid could only gain an immortal soul by marrying a mortal man or sacrificing her life in the sea.

Miss Maid represents the servants who answer to the city's powerful households. Their creed is stated plainly in the story: "as Miss Maids, we have but one duty, to obey." That single line frames her as a weapon pointed by someone else's hand, a servant carrying out orders rather than a villain with her own agenda. The specifics of whose orders she follows in her boss encounter have not been fully detailed in the footage shown.

Vesna is a Vila, one of the six common types of Snowland Fae in Snezhnaya and part of the Druzhna. As the leader and commander of the organization, Vesna is considered the Tsaritsa's right hand and is often by her side. She belongs to the Vila (wind fairies), one of the six common Fae species native to Snezhnaya. Vesna is a member of the Druzhna and directly serves the Tsaritsa. While she acts sweet and innocent, like frequently debate whether her cheerful facade hides a deeper political agenda or Snezhnaya secrets. The Vila species was historically the first to stop paying tributes to the Volkodlaki at the request of Emperor Belyi. This defiance triggered a massive historical conflict known as the Fae War. Her mythological counterpart is locked in a constant battle with Morana (the goddess of winter and death). In Genshin Impact, this is reflected by her warm personality and Anemo element clashing with the eternal Cryo winter of Snezhnaya.

She is the head housemaid of the Snezhnayan royal house, whose family has served the Tsaritsa for generations. Danica manages the domestic affairs of the Snezhnayan royal palace. Her strict, formal aesthetic has led the community to describe her as a "maid assassin" type. Her demeanor is so intensely disciplined and sharp that the player community immediately characterized her as a classic "battle maid" or "assassin" archetype. She commands authority rather than just performing domestic labor. If fan theories regarding her connection to Sandrone or the Adventurer's Guild hold true, she carries a deeply structured, polite, yet eerie manner of speaking—similar to Katheryne but operating at a much higher, authoritative level.

The Demiurge is the Icon Coreflame Genesis Genesis Titan, the thirteenth and hidden Titan of Amphoreus. In combat, it is Cyrene's Memosprite. Due to Lygus' actions, the Demiurge never surfaced within Amphoreus. However, Cyrene encountered the Demiurge, who inherited her legacy and will to save Amphoreus and its people in the name of love. As a Pure Child of Anāsrava, it is also a special Emanator of Remembrance. The Demiurge was intended to be the mind module, also referred to as the "head," of Irontomb, but due to Lygus' interference with the Amphoreus Experiment, the Demiurge was expelled from the extrapolations and never existed. This made Irontomb a being with no sentience, and a puppet in Lygus' hands. However, because Irontomb continued to believe the Demiurge existed, a tomb was still formed. The non-existence of the Demiurge led to Irontomb being "headless," and the instincts that derived from it drove it to replace its head with Nous, guiding all extrapolations towards DestructionAfter Mem sacrificed herself to protect the Trailblazer from the chaotic flow of time, the Demiurge took the form of Cyrene in the 33,550,337th eternal recurrence. The memories of the 33,550,336 previous Cyrenes and Mem merged together. Demiurge then embarked on a journey with the Trailblazer and helped stop Lygus from completing Era Nova by influencing Cerydra, the Ultimate Protocol of the Scepter, and convincing her to aid the Trailblazer and their companions in saving Amphoreus. She also rescued the Trailblazer from the prison of memory created by Evernight and brought her to a Light Cone, where Evernight was confronted by March 7th.

After Gilgamesh and Enkidu defeated Humbaba, the goddess Ishtar fell in love with Gilgamesh. She proposed to the King of Heroes, but he quickly refused because he knew that Ishtar was a powerful and terrifying goddess who rendered men useless. Ishtar, enraged by Gilgamesh's insults, Demanded her father, the god Anu, to release of the greatest of Divine Beasts, the "Bull of Heaven", onto the Earth for her revenge. Against this Divine Beast none could match, Gilgamesh and Enkidu worked together to stand against it and repelled it splendidly. Once again, the goddess lost face. Naturally, Ishtar's rage had not lessened, and she Demanded death for one of the two of them from the gods because it was a sin for one with a human body to kill the beast of the gods. Ishtar's decree was enacted, and one of the two, Enkidu, who was created by the gods, was unable to defy that decree, slowly weakened, and died. Ishtar loves beautiful things, hates ugly things, and the things she desires are the things she absolutely takes hold of in her own hands. Even though she is smart, she is impulsive, and sometimes leaves with an unthinkable reckless abandon. In myths, Ishtar is commented by Gilgamesh as thus: “Inanna? Isn’t she the most annoying goddess in the world!? She will destroy something that certainly doesn’t need to be destroyed, and she will also create something that doesn’t need to be created!” If Ishtar becomes ostentatious in this world, then surely in that way, she will invite chaos simultaneously. The root of Ishtar’s personality does not have any changes even when materialized as a Servant. It cannot be helped that Rin, who is the possessed vessel, almost has the same nature as Ishtar’s as well. Rin is a hardworking person who is not negligent in her trainings even though she is a genius. which appears to be giving a little influence on this Ishtar. Incidentally, Rin became independent after losing her father when she was very young.

Senadina is a mysterious, lighthearted girl who Dreamseeker met after waking up trapped inside a cube in the Sea of Data. According to her, she has no recollection of her own life beforehand—albeit her own name. Senadina first appears in the story after Dreamseeker wakes up from a dream. Instantly, Dreamseeker recognizes Senadina as someone they met in their dreams, only to be met with confusion in response. Due to her unique arrival, Senadina is naturally curious to most things around her, most importantly being her own birth. Along with her curiosity, she also shows enthusiasm and excitement to the world around her. She specifically displays enjoyment for food.

Fusaichi Pandora is a student at Tracen Academy. Since she was born, she has been praised as a "genius" by those around her, and has grown healthy and strong in body, mind, and confidence. Even after entering school, her confidence and talent have not faded, and she is living a carefree life... but maybe she is a little too easy on herself. She hates self-reflection meetings.

Sirin was the Current Era's Herrscher of the Void. Sirin grew up in a small village in Belarus with her mother. Nothing is known about her other family members, if she had any. At some point before the 2nd Eruption, Sirin's mother died from Honkai Radiation and she was taken in by Schicksal to be a test subject at Babylon Labs for their Stigmata Research. In these tests, she and her friends would be subject to being injected with Honkai Energy. The Scientists eventually discovered that Sirin had remarkably high Honkai Resistance and demonstrated the ability to absorb and neutralize Honkai Energy within her body. They hadn't been able to determine how she was able to do this, but believed it was very much what they were looking for. Originally Sirin was a kind and caring girl, thinking of everyone as a friend. However, with the experiments in Babylon Tower killing all of her friends, she grew a complex for power and revenge, refusing to die, and suffering the abuse, she made the resolve to kill everyone in Schicksal. After her partial awakening, she exacted her revenge on the 322 scientists of Babylon Labs. Her heart was filled with a deep hatred for Schicksal and its Valkyries, and was so exacted on the idea that they were all liars that she would not listen to Theresa's words. When she fully awoke as a Herrscher, her personality took a drastic turn. She became prideful, overconfident and arrogant: deeming humans as nothing but insects and believing herself to be the God's chosen one. She looked down on those less powerful than her. Even Bella was shocked to see what her best friend had become. However, deep down Sirin was still a young girl who needed someone she could believe in, despite not being able to believe in anyone at all. And so, she had an attachment to Cecilia that affected Kiana. It seems that in 2014, Sirin's personality is still this way.

Miss Darling is the most pretty person, but also deadly. She is much more capable at stealing people's heart, seducing them, robbing places, and even smashing stuff with her flexible sledgehammer. Her original name remains unknown, but she doesn't care about the past, she cares to create chaos whatever she goes. Also she is obsessed with teddy bears, she represents the true beautiful.

Songque is a Martian that lives in Amber Street, Langqiu. She is one of Seven Shus, titled the Shu of Deception. During her childhood, she was an orphan than resided in an orphanage far from Amber Street. While preparing for a performance, during a drama theater in her orphanage, she was cast as a villainous princess. Despite the negative role, she was full of happiness, having dreamed of becoming a princess in order to leave her orphanage. In the second Samsara, in which the Seven Shus never existed, she was a famous performer in Oxia City. She was scouted out by Thelema while singing alone in a theater and, despite not having any credentials for preforming arts, Thelema hired her.

PROMETHEUS is a Previous Era super AI created by Dr. MEI to predict and manage Honkai attacks, as well as assist in her research. PROMETHEUS was divided into 17 fragments all bearing the same name, given to them by Mobius, who said that she wanted them to have a human name. The fragment relevant to the story is Number 17, who insists she should be called No. 17 and not PROMETHEUS even when Mobius is about to die. It predicted that there would be a total of 14 Herrschers that would appear. The 14th would be far stronger than all the Herrschers before it. It made sure that the Herrschers who would appear in the Current Era would be the exact same as the Previous Era, thus helping humanity's preparations against them. In Mobius' words, PROMETHEUS is "the biggest contributor to the war against Honkai in the next era-because the Herrschers they will encounter, starting from the Herrscher of Reason, will be the same as those in our era." An artificial intelligence created by Dr. MEI to be an assistant who functions based on pure rationality. Created without an emotion module, PROMETHEUS operates on logic, calculations and probability as the basis of her way of thought in order to provide the most rational solutions for her companions, and demonstrates great difficulty in understanding human emotions and decisions made against rationality, sometimes to the point of becoming outright unresponsive. Despite this, PROMETHEUS makes attempts to better understand the nature of humanity and human thought. On rare occasions, PROMETHEUS has herself demonstrated and acted on what can only be described as human emotion, such as when she struck Kevin Kaslana in anger, which suggests that her intelligence isn't as rigid as she might think.

Seele Vollerei is an orphaned girl who became Bronya Zaychik's closest friend at Cocolia's Orphanage. Seele Vollerei was born in the Republic of Estonia. In early life, she lost both her parents and was then raised in Cocolia's Orphanage alongside some other orphans, including Bronya and Sin Mal. Although undergoing much more growth after the events in the Sea of Quanta, Seele is still a rather timid young girl. She, however, has grown to adopt a strong enough will to protect others and do the right thing, even if the task of doing so may daunt her. Seele is incredibly kind and compassionate, choosing means that sympathize over outright violence against her opponents, which is a far cry from her alter ego, "Seele." After the six month time-skip, she has shown to be much more mature and level-headed, noted by Susannah Manatt as dependable and brave. She's also much more assertive in voicing her opinions, albeit still speaking politely to the people she meets even to her enemies. Becoming more self-aware of her capabilities, she has become more confident in herself. Seele had no problem taking Vita head-on and proceeded to tell her opponent that she can fight for as long as the situation permits. Despite it all, Seele is still the kind, friendly, and gentle girl that the people around her love. Seele had the least potential to be chosen for Cocolia's experiment. However, after finding out about the X-10 Experiment, she revealed her true stigma to Cocolia at the last minute, allowing her to take Bronya's place in the experiment. Seele's left the laboratory in the Deep Sea and rushed to the orphanage in order to see Bronya again. In the end, she only had time to pass her hair accessories to Bronya. She did this in order to protect Bronya, but, after it ended in failure and her disappearance into the Sea of Quanta, ultimately leads to Bronya participating in the experiment in hopes of finding her.

Li Sushang is one of the protagonists of the Saga of the Shattered Swords Visual Novel. She is also a secondary character in the main game. She is the daughter of Qin Suyi, who was one of Fu Hua's disciples. She was born in Shenzhou as the daughter of the owner of Yixin Mountain Resort Li Shen and Qin Suyi, the 7th disciple of Fu Hua. Her parents placed a lot of expectations on her, and Sushang inherited the Xuanyuan Sword from her mother. Sushang was not very talented, however, and at the age of five she became the student of Ling Shuang, another of Fu Hua's disciples, in order to improve and to learn the Taixuan swordmanship. Ten years later, Sushang had succeeded in learning the 3rd stage. Li Sushang is energetic and empathetic. She gets visibly confused when complicated topics like physics are discussed.

Susannah Manatt is a B-Rank Valkyrie of Schicksal and a member of the Phosdjinns Squad. Susannah has a cheerful personality. She is determined and motivated, although a bit clumsy. She tries to never fail her squad and gets excited for her tasks. She always tries to keep motivated, and often pushes herself a bit too hard. Susannah is first introduced tired, on the ground, after a physical training she tried to copy from Durandal. Susannah then asks Durandal to teach her about ways to become as strong as her, in which Susannah receives an answer about never copying others, discovering her skills and working hard for it herself.

Shigure Kira is an A-Rank Valkyrie and former member of the Snowwolf Squad of Schicksal, under the leadership of Cecilia Schariac, during the Second Honkai Eruption. She the current host of an alien Sugars name Sugar Molass (called Niggurath by Kira). She also poses as an idol with stage name "Kirastar". Currently, she travels around bubble universes with Niggurath. Originally, Shigure Kira yearned for the singer's feeling of shining, dreaming of standing on the stage, but in her most critical circumstances, Cecilia Schariac, who brought her hope, came to her. This made her change her mind. So, in order to follow the light of Cecilia, she became a Valkyrie in hope that she could also shine like her.

The concept of "time" on Earth disappeared when the "Stigma" project was activated, then the "Pseudo-Time" Crystal appeared. Ai Hyperion Λ is part of this very Crystal and thanks to it, she can see all the "possible endings" for humanity after Project Stigma.