Integers,[1] also referred to as Numbers,[2] are a species of sentient colorful numbers in the genus Algebralian. The most notable members of this species (and the only ones with meaningful canonical appearances in BFDI) are Four, Two, One , Six, and Three.
Integers are hand-drawn figures of their symbol, which is distinct compared to regular characters. They are drawn with thick black outlines with one uniform color. As the regular characters have dots for eyes, Integers have actual scleras. Their arms and legs are also different, being drawn with width and usually a lighter color than their body. The front and back views of their bodies are the same, even if vertically asymmetric. The only difference is the lack of a face. An integer with a hole in it (such as 0 and 6) will be covered with its color.
In pre-split BFB, Integers are sloppily drawn, but in post-split BFB and TPOT, they are drawn a lot more smoothly.
In "X Finds Out His Value" however, Integers appear to be more geometrical and refined, animated using rigs with straight lines and curves.
Behavior[]
Integers seem to share a close relationship with one another, rather with non-math symbols, sticking to their own society.
Activities[]
Integers have many simple activities they may consider hobbies. These activities are:
Integers seem to be more flexible than objects. Being round and bulbous, Integers seem to be made out of a squishy material that varies in different form from character to character. Four has a squishy material (as seen in BFB 1 when Liy squished them), Seven is made of a rubbery material (as seen in "Thanks for 900,000 subscribers!"), and Eight is very solid, rumored to be made of pure lead (mentioned by Six in "Thanks for 900,000 subscribers!"). The rest of the Integers' materials are unknown. Numbers are also said to not have a gender "where [they] come from" (mentioned by Four in "Enter the Exit"), most using any pronoun imaginable, and as such they frequently use "they" or "them" pronouns (although they use "he" or "him" pronouns occasionally). They are also covered in "numeric membrane" (as Coiny implied in BFB 17), which is an analogue for skin.
Abilities[]
Numbers seem to have a range of abilities, greatly differing from regular objects.
Integers differ in abilities, with some being weaker than others. Four has most of the abilities listed. Two apparently has the ability to give their powers to others, though it is unknown if the rest of the Integers have this ability.
When Four and Donut were multiplied, the former was found as goo inside of him. This may mean when any Integer is multiplied by 0, they are combined into 0.
Integers seem to come from another realm, outside of the BFDI space.
In "Enter the Exit", when Four proceeds to eliminate Roboty, they appear to have the old straight outline they had in XFOHV.
All Integers have made at least one cameo in the BFDI universe, whether as recommended characters in some BFB episodes or as actual characters in videos featuring the Algebralians. Notable examples include JacknJellify's 600,000, 700,000, 800,000, 900,000, 1,000,000, 1,500,000 and 2,000,000 subscriber specials.
Integers with two or more digits are connected into one, such as the case with Ten, with the 1 and the 0 connected together into 10, with Fourteen, with the 1 and the 4 connected together into 14, with Fifteen, with the 1 and the 5 connected together into 15, and One Million, with the 1 connected together with the six 0's into 1000000.
The official name of the species was revealed when jacknjellify hit 700,000 subscribers.[3]
The colors of the numbers from 1 to 8 (except Five) are apparently based on the Minesweeper number colors.
It is debatable that the color of 0 is based on the empty silver squares that appear in Minesweeper.
It is unclear where Nine's color came from, since no color in Minesweeper looks even similar to their color.
Five's (and possibly Fourteen's) color is based on Super Minesweeper.
A musical eighth note similar to math symbols appears in Lo-Fi Beats to Yoyle To, but it's not clarified if they are a math symbol, Tune, or neither.
According to Four and Michael Huang, Algebraliens have no gender, though they are still sometimes referred to with he/him pronouns, they/them being used the rest of the time as well.
They are always drawn in the same position and never backwards, even when their backs are facing the screen.
Zero has been shown to have many multiple versions of themselves, implying that the other Algebraliens are not unique beings and have more than one version of themselves.
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