BB (ビィビィ, Byibyi?), Class Name MoonCancer (ムーン・キャンサー, Mūn Kyansā?), is a MoonCancer-class High-Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order. She also appears as an enemy-only Foreigner-class and Alter Ego-class Servant.
The first component of BB is Pele (ペレ, Pere?), the immortal Hawaiian goddess who is the incarnation of the volcanoes of the Hawaiian islands. Pele is said to have been deeply in love with the demigod of pigs, Kamapua'a, despite abusing him.
As BB assimilated with the immortal goddess Pele, who was the incarnation of the volcanoes of the Hawaiian islands, her skin color turned into a tanned shade suitable for a tropical country and her personality became more aggressive.
The second component of BB is supposedly Nyarlathotep (ナイアーラトテップ, Naiāratoteppu?), an evil Outer God that can be called a trickster. It is a being from deep space that does not exist on Earth, and it is not even from the same universe originally. It is something that is able to entice every intelligent lifeform, toying with them and causing them to self destruct. BB claims she came into contact with it through Chaldea's observatory, gaining some of its power and creating the "cage of time" in Hawaii. Her profile posits that she may not have even been in sync with the god, simply under the wrong impression with a sort of placebo effect.
A Kouhai-Type Devil Heroine appears gallantly from the Far Side of the Moon.
Abusing her Master as a cheerful yet precocious Kouhai.
While she is a little devil who calls herself a "great devil", there was this sweetness of hers that could not be offered to the devil since she was originally a good child... but the BB this time is a bit different.
BB's First Ascension is a cheerleader who roots on for her Master, but as she moves into her Second Ascension and Third Ascension, her true nature begins to reveal itself.
BB, who installed the divinity of the goddess Pele who is "violent, selfish, and kills those who get involved with her" has become "an S goddess who drives those dearest to her to death".
Serva★Fes 2018: Servant Summer Festival!
BB appears as the organizer of Servant Fes, merging the islands of Hawaii into the Singularity of Luluhawa. She greets Ritsuka and their friends upon their arrival at Honolulu and tasks them with retrieving the Holy Grail and bringing it to Kilauea in order to separate her from Pele, whose Spirit Core she had consumed while setting up the festival in order to resolve the Singularity. As Medb will win Servant Fes' Holy Grail unless the group can create a better-selling manga than her, she sets up a time loop with which they can presumably improve their skills until they can outsell Medb.
The group had originally been summoned to Luluhawa to investigate the mysterious signature of a Foreigner class servant. Initially believing it to be Mysterious Heroine XX, they investigate further with the help of Edmond Dantès and discover that the Foreigner is actually BB, tracking her to Mauna Kea instead.
In reality, she had communed with an Outer God inferred to be Nyarlathotep and planned to trap the protagonists in an endless loop of suffering and pain by corrupting the wish they would make on the Holy Grail. This was born from BB's desire to try and keep humanity safe from the impending threat of the Human Order Revision while also ensuring that Ritsuka would not fall into despair as they dealt with the Lostbelts, just as she tried to protect Hakuno Kishinami in the 69 day time loop. With the help of MHXX, they remove the powers she supposedly got from the Outer God and she agrees to end the loop.
Following her defeat, BB meets with the group at Honolulu International Airport and convinces them to defeat four extra "fragments" of herself - in the form of special raids - whose defeat will finish dislodging Pele from her Spirit Origin and ensure Hawaii (and her complexion) will return to normal. After they're defeated, BB fully returns to her old self and the group returns to Chaldea.
In this form, BB has taken in power from two other entities; Pele and Nyarlahotep. The power assimilated from the former grants her authority over Hawaii, while the power bestowed from the latter allows her to loop time. Put simply, she recovered the points from her original maxed-out "universal last boss-type underclassman" skill tree and redistributed them in a maxed-out "evil god last boss-type underclassman" skill tree. As a result of her Evil God Emulation (邪神のエミュレート?), she became a brand new BB from the ground up, differing in nature and function.
Unlike the other swimsuit characters, she does not use "Summery" weapons.
In the first two ascensions, she mainly uses a "fake cute hand-to-hand fighting style" and her showy moves include things like dunking with a ball of magma and summoning a volcano geyser with a snap of her fingers.
In her third ascension, with her devil wings spread out, she mainly engages in aerial battles, and by freely transforming her tentacles, she becomes a cruel fighter who thoroughly mangles her opponent with swords, sickles, claws, and tentacles.
BB's Class Skills include Territory Creation (A) and Existence Outside the Domain (B). She also has One Who Swallows the Land (EX) and Divine Core of the Goddess (A). Her Personal Skills include Self-Modification (EX), Aurea Pork Poculum (A) and Faceless Moon (EX).
Her A Rank Territory Creation Skill does not seem to be blocked/frozen, but its orientation is different from that of the usual BB. A repulsive Territory Creation skill that erodes into reality, cuts it out, and preserves it for eternity as a "different world".
Her B Rank Existence Outside the Domain Skill is due as such as Observers from outer space and the abyss. One of these beings' and BB's "eyes just happened to meet" and from such a form of contact this pseudo skill was born.
BB has the A-rank Divine Core of the Goddess Skill due to The transferred divinity of Hawaii's goddess of volcanoes, Pele. Although limited to the Hawaiian Islands, Pele is a powerful goddess so the skill's rank is high.
Referred to as Pele-ai-honua (one who devours the land). Being a skill that grants a permanent burn immunity, it's simple and handy.
Self-Modification is a Skill possessed by the regular BB. The skill to remodel oneself. The AI created by the Moon Cell has been provided with the absolute command to "never upgrade their functionality". However, BB who escaped from this restraint as a result of a bug has begun to expand her own abilities. To enhance her computational ability, NPCs, AIs, and even Servants were preyed upon and disassembled with her Black Noise, and utilized as her own memory. Although it was a retrofit where it wouldn't be surprising even if she broke down, in the end, BB transformed into a superior AI with a huge capacity. At first glance, she seems like an ordinary perfect beautiful girl (her own words), but inside her, an absurd amount of functional devices and facilities have been compressed. In "Fate/Extra CCC", as even A-class Wizards such as Tohsaka Rin and Rani VIII have called her a 'monster of giga structure', in the cyber world, she possesses the same volume of information as a single world. Originally, in the material world that special characteristic wouldn't be counted...no, it wouldn't manifest, but because she possesses the trait of 'eroding reality' due to the Evil God Emulation when being observed by "those who can see", her original information processing ability...her original form compressed into the space of imaginary numbers...can be caught a glimpse of. This is the reason why only Swimsuit BB has the "super giant trait" and regular BB doesn't.
Aurea Pork Poculum: Golden Pig Grail (黄金の豚の杯, Kogane no Buta no Hai?) is the Hawaiian version of BB's Aurea Poculum. It is connected to the goddess Pele, who deeply loved Kamapua'a, the demigod of pigs, despite abusing him, and has given BB an affinity to treat her favorite partners as piglets. Unlike Aurea Boura, it is used on BB herself. When she drinks from it, BB's S switch is turned on.
Faceless Moon (無貌の月, Mubō No Tsuki?) is a skill connected to the second divinity installed into BB's Saint Graph - the lingering scent of a god, that drives humans to destruction as a test, with the third eye. A Reality Marble which makes the boundaries of Imaginary Number Space clearer and casts the surroundings into the Shadow Phase: Far Side of the Moon (月の裏側, Tsuki no Uragawa?). When the world is shrouded by the moon's shadow, everything will be frozen in time.
She transforms the surroundings into the space of imaginary numbers by enlarging its own shadow, ranking down the world and its life entities into that low-dimensional beings. A space of madness and she herself, manipulating them as the ruler.
The original BB's Noble Phantasm was a surgery in a "cute, fun, yet cruel nurse clothes" to defeat the enemy, but this one is a serious operation in which BB uses her ability to its full potential.
As the inventor of the Horror-Type Heroine, it is the attack of the last boss who uses the motto of: "Large-scale, scary, and seriously dangerous".
BB, who becomes a massive high-dimensional being, scoops out the earth easily and invades the world. Just like how a spoon scoops out some pudding.
... It is said that the installed second divinity reveals itself only in the Third Ascension Saint Graph...?
Arco Wada is the character designer for BB.