"Don't call me Algebralians!" ― Needle, on multiple occasions (altered)
This article has been suggested to be renamed to "Algebraliens". This template is here because the move might be incorrect, damaging or controversial.
Discuss the new name in Algebralians's comments section or talk page about whether or not to move the article.
Reason: "Algebralien" appears to be the correct spelling used nowadays, for example on One's plush description.
This page was last edited on June 23, 2025, at 15:58:17.
The only canonical appearances of Algebralians are from Battle for Dream Island. Their appearances in the pre-BFDI comics and Subscriber specials are considered not canon, meaning they are not part of the central universe and timeline of events.
What is the origin of the Algebralians in the Battle for BFB series?
Algebralians, alternatively Algebraliens or Numeral species, are sentient beings from the Equation Playground in the Battle for BFB series. Resembling mathematical symbols, mainly numbers, they feature in 'X Finds Out His Value' and 'The Number Playground Chronicle!'. Their presence in pre-BFDI comics and XFOHV, however, is non-canon and not part of the main timeline.
Provided by: Fandom
How do Algebralians resemble mathematical symbols in their appearances?
Algebralians, also spelled Algebraliens, are vibrant, genderless entities that mirror mathematical symbols. They hail from the Equation Playground and have appeared in episodes like 'X Finds Out His Value'. They represent mathematical indicators such as the Obelus, symbolizing the Divide Operator. Algebralians are categorized into Integers, Variables, Polygons, Irrationals, Operators, Fractions, and Polyhedrons, including characters like Zero, One, Two, a, N, X, Triangle, Quadrilateral, Rectangle, Pi, Phi, Plus, Minus, and Times.
Provided by: Fandom
What are the notable appearances of Algebralians in the XFOHV series?
Algebralians, sentient beings resembling mathematical symbols, originate from the Equation Playground. They've appeared in 'X Finds Out His Value' (XFOHV), 'The Number Playground Chronicle!', and 'Battle for BFB'. However, their XFOHV and pre-BFDI comic appearances are non-canon. All integers have cameoed in the BFDI universe, either as recommended or actual characters. They've notably appeared in JacknJellify's 600,000 to 2,000,000 subscriber specials. All Algebralian species can split and fuse.
Provided by: Fandom
What is the significance of the Equation Playground to the Algebralians?
The Equation Playground serves as the home for the Algebralians, sentient beings that resemble mathematical symbols. This location initially appeared in 'X Finds Out His Value' and has been showcased in several subscriber specials. The Algebralians, who are known for their colorful and genderless appearances, originate from this playground.
Provided by: Fandom
In what context does the term 'Numeral species' refer to Algebralians?
In the context of Algebralians, 'Numeral species' refers to their classification based on the mathematical symbols they represent. These sentient beings, originating from the Equation Playground, are categorized into species like Integers, Variables, Polygons, Irrationals, Operators, Fractions, and Polyhedrons. Their appearances include 'X Finds Out His Value', 'The Number Playground Chronicle!', and Battle for BFB.
Variables are based upon mathematical variables which used the English Alphabet or even other languages and Alphabets (as shown in "BFB 31") as a symbol. Most use or are represented by letters in the Latin alphabet. X was introduced in "X Finds Out His Value" as the very first variable, with N Variable, Y Variable, and Z Variable being introduced in "The Number Playground Chronicle!".
Irrationals were introduced in "The Number Playground Chronicle!". One member, Pi, served as a journalist and writer for the titular newspaper, writing on articles such as Five and Three not catching balls. Irrationals reappeared in the short "Pie vs Pi: The Pi Day Massacre" and had a larger role in that short. This is their most recent appearance.
These species of Algebralien have exclusively been seen in "The Number Playground Chronicle!" and have not been confirmed to exist within other canons containing Algebraliens.
Polygons were introduced in "The Number Playground Chronicle!". They are based upon the first 11 polygons by sides minus heptagon (7 sides) and decagon (10 sides). They did not make any more appearances after their debut.
Operators were introduced in "The Number Playground Chronicle!". They are based upon mathematical operators. Divide Operator was the only operator to have been physically seen, until Plus, Positive, and Asterisk were introduced as recommended characters. Plus, Multiply, and Divide were later seen in Subscriber Specials as inanimate objects.
Algebraic Expressions are Algebralians made with Variables (and sometimes) integers along with constants. They can also sometimes have operations (ex. additions, substraction, devision, etc.)
Square (a to the Square) is the most notable Algebraic Expression
Fractions were introduced in "The Number Playground Chronicle!". They are the only species introduced in the aforementioned comic to have never been visually depicted.
Unseen Characters[]
Characters not seen but either mentioned or referenced.
One Half Fraction
One Third Fraction
Three Fourths Fractions
One Quarter
Phi
Minus Operator
Times Operator
Octagon
Pentagon
Sixth Zero
Undecagon
Cube
Icosahedron
Tetrahedron
Dodecahedron
Variable ‘N’
Quantifiers[]
∀, the most Notable Quantifier.
Quantifiers are Algebralians used to specify the extent to which a statement containing variables is true.
These Algebralians have an unknown genus. Most of these characters are recommended with the exception of Eighth Note and Infinity, and Ninty Six not even being a math symbol (although it could be argued they represent 96). (Some of the Algebralians might not even have a genus as they're variations of other Algebralians).
The term "Algebralian"/"Algebralien" was initially coined by fans of the show. It was later adopted by Cary Huang himself, solidifying the species' nickname as official.
Algebraliens live for a long time, as seen in Thanks for 900,000 Subscribers! where Six and Nine spend 28,000 years getting stones for the stone-to-boot-o-tron
Algebralians are the only characters (and species for that matter) in the series who do not identify themselves with a specific gender, due to their species not having it[2].
Algebralians might have very fragile skin. In "X Marks the Spot", Two claims that glue can damage an Algebralian's skin, even though they never state how.
Algebralians appear with sclerae (the whites surrounding their pupils), whereas the anthropomorphic objects are shown only with pupils.
Algebralian digits 1-8, with the exception of five are colored based off of numbers from the game Minesweeper. This is stated in the credits of "X Finds Out His Value".
Some algebralians have been shown to be able to retract limbs. In some scenes, Two, Pi, Fourteen, Tau, and more have been seen without certain limbs that they usually have.
According to "The Number Playground Chronicle!", Four and X are the only algebraliens to have phones, but in "Why is the BFDI Mouth Everywhere?" and when Two "Checks if they have voted," Two has a gray phone of their own, with the words "Two's awesome phone" on the back of it.
Like objects, Algebralians can die, as proven in several BFB episodes where Four kills X by despawning him.
Algebralians have presumably existed for hundreds of years, as in Twosday, Two stated it has been a hundred years since the Twosday tradition.
That means the earliest the algebralians could've ever existed would be no later than back in February 2nd, 1922.
Algebralian assets/bodies do not flip and remain the same, even in a 3D space, regardless of whether they face backward, forward, left, or right. Only the face is moved to show which direction the algebralien is facing. This does not apply to X, since when you flip their asset, they’re still the same. This is commonly an overlooked/missed detail in fanon drawings.
It is implied that Algebraliens have blood. When Nine was beaten up, they had visible wounds colored light red and purple. Additionally, Zero with a cap was shown blushing in the "Thanks for 2,763,000 Subscribers!" special.
Algebraliens have bones (specifically hip bones), as Zero with a cap has broken one before in a tape.
4 and X have appeared the most.
Calculations[]
As most algebralians are numerical characters, they are able to fuse and subtract with each other as if they were mathematical sums. So far, six instances of algebralian calculations have been shown on the channel.
"Four Goes Too Far", where Four and Donut (acting as Zero) multiplied to create Zero, eliminating Four. The equation appeared to not have a proper multiplication symbol (×), though it is theorized that A Better Name Than That's sled acted as a multiplication bracket.
It is confirmed in this video that, whenever two algebralians combine, part of one algebralian enters the other: such as Six and Nine becoming a blue-grey gradient of 15, and Four becoming Donut's filling.
"Thanks for 2,000,000 Subscribers!", where Two divided Fourteen into two green sevens. And where Seven and "Green Seven" were added together to create Fourteen. It also had two green sevens added back to Fourteen off-screen.
.png "Zero (1).png (116 KB)")
.png "TPOT-Three (NO ORGINAL COPY).png (702 KB)")
.png "Eleven (BFDIA 9).png (317 KB)")
_%2B.webp "Thirteen (Ian sketch) +.webp (11 KB)")
14÷2=7
.png "First Seven (split).png (246 KB)")
.png "Jaysillyboy (Recommended Character).png (407 KB)")
