One | BFDI - TPOT

Dismemberment (possibly): In "Bottle For Dream Island", she is able to use her own telekinesis to take Donut's legs by force. This may just be a use of her telekinesis rather than it's own ability. Almost all of Two and all of Four's powers: In "Last One Standing", Pencil signs One's deal to give away all of her power, which were from Two and Four. Snowball still has a part of Two's power, meaning she does not have it all. Her on-screen uses of these powers include shooting lasers out of her eyes that easily destroy faraway planets, killing aliens, bending, warping, and kicking Earth, and flying through space at super-speed. Passive Aura: In “Last One Standing”, After successfully gaining all of Four’s and Almost all of Two’s power, One gains a bright Green and Light Blue Aura with dark blue sparkles. This is from the sheer power she’s possessing. This can also leave a colorful trail whenever she travels fast. Nine’s powers: In “Alone”, One is seen absorbing Nine and gaining their power, after destroying their planet.

Super speed: In "What's Up Bell's String?", during the Team Swap, One runs around shuffling the contestants, finishing in just 17 frames, or less than a third of a second, all while Two is looking away. By the time that someone says something, One has jumped back into the bush, leaving Two and all of the contestants oblivious to what happened. Conjuration: One can create objects out of thin air, as seen when she conjures a document for Fanny to sign in "What's Up Bell's String?", creating body parts to offer Ice Cube and Fanny, or in "Seasonal Shift", where she creates a remote while talking with Gaty to show her what happened to the eliminated contestants she took. Pocket dimension: As seen in "What's Up Bell's String?" and "Category One", One can create pocket dimensions and manipulate the contents at will. Black hole immunity: As One was shuffling the contestants, she moves Black Hole effortlessly without being warped by his gravity. In "Last One Standing", One teleports Black Hole to her pocket dimension without any issues. Body manipulation: One's foot extends and grows in size as shown in "What's Up Bell's String?", in order to grab Fanny. Power draining: In "Seasonal Shift", she drains the Yoylite pieces of their time traveling powers, and it's implied she can do this to other Algebraliens as well, either via her contracts or draining them of their powers forcefully. Obfuscation: In "Bottle For Dream Island", she is able to ensure that certain contestants (notably, Tennis Ball), and even Four, cannot comprehend the research that Ice Cube and Fanny done on her, by obfuscating the contents of the whiteboard along with Pillow's research notes when Golf Ball tries to read over them. In "Last One Standing", Four is able to reverse One's obfuscation effect on the whiteboard.

Technology/Electricity manipulation: As seen in "Category One", One is able to manipulate Robot Flower's mind to go back to her previous self, and it's implied that they're also capable of making her personality even more destructive. She can also appear inside screens, as seen in the beginning of "Seasonal Shift". Reality warping: One has the ability to change, create, or even destroy parts of Dreamier Island, the Grasslands, and possibly any other places indirectly only by using a miniature of the location she wants to warp in her dimension. She is also able to make the rift in space-time shoot out reality-warping lightning bolts via her miniature in "Last One Standing". Anomaly removal: In "Seasonal Shift", she was powerful enough to restore the universe to a more stable state before the rift in space-time opened, effectively undoing much of the damage caused by time travel. However, since the rift itself was only reduced to a manageable level for Black Hole rather than erased entirely, this suggests either she lacked the strength to completely fix it, or, more likely, she chose not to, keeping the rift intact as leverage over her future victims. This is consistent with her willingness to endanger all of existence itself, knowing she remains completely safe within her own dimension. Atmokinesis/Weather manipulation: In "Category One", with her ability to warp reality, One can change the weather and create storms to cause havoc. Chronokinesis/Time manipulation: In "Last One Standing", One is revealed to be able to remove people from the timeline, some of these include: Basketball, Gaty, and Barf Bag. It is clear, however, that victims to this ability are not completely removed from the timeline as if they were never there, as Snowball still remembered Basketball even after her removal. Teleportation: One is able to teleport herself and other people as seen in "What's Up Bell's String?".

Nigh-Omnipotence: One has been shown to possess near-limitless power, though she admits to being weaker than Two and, by extension, Four, in her line, "I do have power, but not enough." This is supported by “Alone”, where Four is shown to have claimed their power from a larger piece of Yoylite and shared this power with Two. The line likely refers to her inability to properly recover Three, and her belief that claiming more power would aid her in doing so. Even without Two's power, however, she is still unimaginably powerful, showing near-unrestricted control over space, time, matter, and energy. She can seemingly grant any request made in her deals, such as restoring lost limbs or reversing changes to someone's personality. Her power is most prominently displayed in "Seasonal Shift", when she stabilizes reality with just a snap before the rift in space-time opened. Overall, One can achieve almost anything imaginable, showing that even if she falls short of Two and Four's powers, she remains a godlike entity in her own right. Super strength and/or telekinesis: In "Alone" it is shown that One used telekinesis to throw rocks at an opening in the Moon in order to escape. However, her ability was clearly limited at the time, as she was unable to breach the Moon on her own, while Lightning’s strike created a crack that she could take advantage of. In "What's Up Bell's String?", she used telekinesis to hold Fanny's new mouth and the contract list. She is also able to easily kick Earth away in "Last One Standing", though this was shown after she gained most of Two's and all of Four's powers from Pencil. Doing this would take over 10^17 megajoules of power. Nigh-Omnipresence: One can be seen being in some of the contestant's dreams and hiding in plain sight in certain scenes. The contestant's dreams include: Black Hole, Pen, Winner, Barf Bag, and Book, but One is still in reality, meaning she can be in multiple places at the same time.

One is a light blue Arabic numeral one (1), being based off the design of the "1" with a base (𝟷), likely taken from the original Minesweeper. The diagonal part and base of the "𝟷" are misaligned, the former more far off to the left. Unlike almost all well-known Algebraliens, One doesn't have any arms.

(body color: #567AF0) (limbs color: #7995F6)

One is nonchalant, calm and seems helpful, but is very manipulative and malicious under the surface. She seems to constantly observe the contestants and knows their vulnerabilities very well, which she exploits to convince (or blackmail) them into signing her deals, often for rewards she may or may not actually give. One is easily irritable and gets annoyed when people are hesitant or resistant to her and gets enraged when people defy her like Donut and Leafy do in "Last One Standing", and follows through with her blackmail or otherwise punishes them severely. It is suggested that these deals involve One taking full control over them, as it was phrased as them “signing themselves away”, and she said someone on the list (of signatures) would disappear if Donut kept refusing the deal. She is also very power-hungry, conspiring to take Two (and later Four’s) power and gleefully fidgeting with it when she finally gets it in "Last One Standing".