Gender: Female Personality: Self-centered Appearance: A plastic thumbtack Traits: In BFDI, she showed an unlikable side by bullying other contestants who were cowards, leading to her elimination in 20th place. She is best friends with Coiny. She earned two Win Tokens but failed to use them properly before being eliminated. When she gets too nervous or scared, she sweats, and her sweat is actually sap. It is said Pin naturally secretes sap. She loves bell peppers very much.

Gender: Genderless Personality: Close to evil Appearance: The number 1 Traits: The main villain.

Gender: Genderless Personality: (Decided by user) Appearance: The variable X Traits: Often overshadowed by Four's incredible powers, but X has abilities too, mostly related to survival like levitation, regeneration, and walking through lava. Best friends with Four.

Gender: Genderless Personality: Arbitrary and violent Appearance: The number 4 Traits: Like X and other Algebralians, Four's art style changes frequently. This is because the character isn't drawn using a fixed asset like the objects; since BFB, many animators have participated, so the style varies by person. Best friends with X.

Gender: Female Personality: Seems nice Appearance: A bag filled with vomit Traits: Seems to have a good personality. She appears to be able to control the liquid inside her body at will and can even use its momentum to swing a swing set! She also seems to be very knowledgeable about science.

Gender: Female Personality: (Decided by user) Appearance: A wooden picket fence Traits: Often mistaken for a male because of her voice, but she mentioned in TPOT 2 that she chose to live femininely. Best friends with Two.

Gender: Genderless Personality: (Decided by user) Appearance: The number 2 Traits: Best friends with Gaty. However, Gaty was eliminated in TPOT 14, and Two sounded heartbroken while announcing her elimination.

Gender: Male Personality: (Decided by user) Appearance: A copper metal coin Traits: Does not die even if he falls into lava. This is a common trait for characters made of metal. Best friends with Pin.

Gender: Female Personality: Cheerful Appearance: A pink furry ball Traits: Gained a lot of popularity thanks to her cheerful character, but her reputation plummeted after she betrayed her friends in episode 5e. As a side note, she hates being called "Puffy" by her friends.

Gender: Female Personality: Very kind Appearance: A hardcover book Traits: As her name suggests, she is a book and can open and close herself.