One

One (1) is a purple Numberjack with blue-green eyes. In The TroubIe With Nothing, she was referred to as a female. She is voiced by Mary Robertson. She is Three's sister.

She is a best friend with Zero and they have even caused trouble together in Tens Moments.

There are six missions with One flying out of the Numberjacks' home.

Biography
When the Numbertaker was about to hoove up Six in One Won, Three, Four and Five prepared an emergency launch to save him and used Brain Gain to make her scarily big as suggested by Agent 94.

In One More Time, she made everyone and everything that was going under bridges one more.

At the beginning of 1, 2, 3, Go, she falls asleep nonstop during Three's new game, in which the Numberjacks say their number in order while their Buddy Blocks jump.

Level 75

 * Grumpkin hiccuped 80 bubbles out.
 * An octopus is NOT a pet.
 * 57 bats flew out of the cave and scared Little Blue, Pinkerton, and Abby.
 * Little Blue took Eli the dog for a run.
 * Little Blue tries whistling to call his pet birds.
 * Little Blue tries to whistle to call back Eli.
 * Little Blue porque le fav gato un exagni un de bein.
 * !A monsters le muy sports amigo un avo.
 * Pinkerton and Grok thought they can say quack to their duck' s friend.
 * It came raining like dogs and cats.
 * Be careful were you go trick or treating next door during on Halloween.
 * A pufferfish can blow itself up like a balloonfish.
 * Scampi dijo algo bonito Yoshi pro telefono.
 * !A Sherbert y Tuttle muy de que de marron vaca de porque una't taog.
 * Yoshi had an accident skiing down the icy hill.
 * Grok scared us by pretending that he was a yeti.
 * Pinkerton dropped 52 marbles on the floor and accidentally started a party dance.
 * Bean has to eat the green broccoli before he wanted dessert.
 * The little green man movie from Tom and Jerry: Blast Off To Mars is too scary for Pinkerton and Grok.
 * Rocky hits a stone at the beehive and he was chased by 69 angry bees.

Missions

 * One More Time with
 * One Won (24)
 * Seaside Adventure (47)
 * Square Dancing with Four and Nine (Shape Japer)
 * Tens Moments with Zero and Five
 * Zero the Hero (Numberjacks)

Personality
Although she is very young she has immense intelligence for her age, as demonstrated by her ability to use the Brain Gain Machine and the fact that she knows the concept of "one more".

However, she is still very young, so she is not able to use much logic or speak in full sentences, she is described as being " her own world".