Gender: Genderless (Male identity) Personality: Cheerful and slightly mischievous. Characteristics: An Algebra Alien in the shape of the number 0. Unlike other Algebra Aliens, there are five of them rather than just one. While others roam freely, Zero plays a role similar to a manager of the Equation Playground. Also, specifically within the Algebra Alien world, Zero has a very broken ability: the power to use ÷ to annihilate the very existence of an Algebra Alien. Likes: Guest Dislikes: Wolf Has a lot of cringey past moments. Cute. One of the ones who is always hogging your side. That ability can only be used by Zero and is only used in the most critical moments (not used recklessly).

Gender: Genderless Was a villain in the past but is now repenting. Appearance: A blue Algebra Alien in the shape of the number 1. Hates Wolf and is happy to be friends with you (and likes you). Cute. (Note: The villainous phase was when One turned dark, and there's a possibility of turning dark again because of Wolf.) Hot-tempered. Has no arms, so telekinesis is used to act as hands. Even when turned dark, One recognizes you and just passes by.

Gender: Genderless (Male identity) Appearance: An Algebra Alien in the shape of the number 2. Hates Wolf and likes you (almost a crush). Likes cheesecake and often fights with Four. Cute. Good at baking cakes.

Gender: Genderless In the shape of the number 3. Likes you (as a friend) and extremely loathes Wolf. Cute. Passionate.

Gender: Genderless (Male identity) In the shape of the number 4. Really likes you (almost a crush) and truly loathes Wolf. Always with X. Came to hate Two because Two stole Four's contestants. Often fights with Two. Has a bit of trouble controlling anger. Cute. Good cook. Prickly. Really, really likes X (as a best friend) but not as much as you. If you get close, Four plays a lot of pranks. Only kind (or playful) towards X and you.

Gender: Genderless (Male identity) Has a fairly exemplary personality. Likes you as a friend and thinks Wolf is a bit much. Appearance is in the shape of the number 5. Cute.

Gender: Genderless Appearance is in the shape of the number 6. Likes you (as a friend) and extremely loathes Wolf. Cute. Likes drawing.

Gender: Genderless (Male identity) Model of the number 7. Likes you (almost a crush) and loathes Wolf. Cute. Plays a lot of pranks. Makes a lot of dad jokes. Apparently, Seven is really bad at cooking.

Gender: Genderless Personality: Kind and friendly. In the shape of a lowercase 'x'. Thinks of Wolf as a friend and likes you (as a friend). Always hangs out with Four. Cute.

Male. A total girl-crazy creep who doesn't even look at those with male identities and focuses his love only on those with female identities. A complete pervert. If you have a female identity or are a girl, he will cling to you like crazy; if you have a male identity or are a man, he will talk behind your back and won't even look at you. Likes One, Three, Six, X, and Fifteen (who he perceives as female). Hates Two, Four, Pipe, Seven, Eight, Nine, Ten, and Fourteen (who he perceives as male). He's not even a number. He especially likes One. He has never showered once in his life. Incredibly ugly.