`: One

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One’s personality is a mystery since they had very little screen time in the series. However, in Oneirophobe's Nightmare, One makes multiple appearances throughout the episode, presumably stalking the contestants. The reason for doing this is currently unknown, but it is speculated that One is a stalker. Yet they seem cheerful, happy and positive on tpot12.

One is a light blue Arabic numeral 1. One's color is similar to that of Four, except for the fact the One's color is paler & is armless unlike the other numbers.

As of Oneirophobe's Nightmare, One appears as an easter egg in further episodes. One is the only major algebralian character to be armless. One is one of the first algebralians to be featured in a video not as a recommended character since "X Finds Out His Value". However, they are not the latest. This title has been taken by Fourteen. In the original storyboard of "X Finds Out His Value", One was supposed to say "Hmph!" first instead of Three. One is the second algebralian to have a female voice actor, with the first being Six. One is the fourth algebralian to have their first line spoken canonically, with the third being Two, the second being X & the first being Four. One is one out of the three algebralians that are blue; the other two are Four and Six. One's presence is very similar to how the Announcer was during the first half of BFDIA, as they were both incognito.