Eleven, or 11, is a Numberblock made of 11 blocks. She is voiced by Beth Chalmers.


Eleven is made of ten white blocks and one red block with two red eyes, one twice the size as the other, red lips, green limbs, white socks, and dark green shoes. There was a blue variation too. According to SOSR, all 11s are female, but according to Punchcar63 and BrodyTheRedflower, red 11s are females and blue elevens are male, similar to how a male bird of paradise differs from a female one.

Prototype Designs

One design of 11 is male and brown brown, and is a cyclops-like 1, created by Gabe Sotillo (Punchcar63).

Another design is a football/soccer ball. She is white, with black pentagons all over her, created by SuperToysUniverse.

Another design of 11 is green with light green eyes and lips, created by the artistic son of Bex (LadySchaefer).

Another design of 11 is white with dice-blocks. Like 6, each of her blocks shows a different number of spots from 1-11. Created by Its Mr Job.

Another design of 11 is scarlet, with eyes on the sides of his head, like 6, and is arranged 1[>]1+3x3. Created by Arif Khamis-Yussuf (Arifmetix).

TSRITW's design of 11 is purple.

MDZโ€™s Design is turquoise with the eyes on the ending blocks, and is arranged 2L+3x3.

PBS66Wikia's design is light red with a red border, three eyes, and is arranged 1R+2x5.

Another design of 11 is pink. Created by ALARM BOB OMB.

Another design of 11 is coral red with red oval eyes, lips, limbs, hat, and bow tie. Created by SoSR.

sally's design of 11 is light blue, and is male, he only appears in sally's adventures as a background character, he is voiced by sally herself.

Adonyai (Rickyakay) 11 is red, secretly, one of her blocks has poop, and she likes to fly, she also likes basketball, and she is a palindrome.

Nina C. Burke (TheReturnOfNina)'s design of 11 is rainbow with blue limbs.



  • 11's numeral means:
    • 3 in Binary.
    • 5 in Quaternary.
    • 7 in Senary.
    • 9 in Octal.
    • 11 in Decimal
    • 13 in Duodecimal.
      • In the duodecimal system, the numeral for 11 is a different symbol and is named "el".
    • 17 in Hexadecimal.
      • In the hexadecimal system, the numeral for 11 is B.
    • 21 in Vigesimal.
  • 11 is the Numberblocks counterpart of K. This is because K is the 11th letter, and 11 is a soccer player, just like K is a soccer player, and 11 players are on a team (A to K).
  • Many people confused 11 with a boy, mainly due to the fact that most soccer/football players are male, the looks of her, and her eyes. This is, however, the earliest reveal that Eleven was actually a girl; Zero and Blockzilla came much later.
  • 11 was actually an easter egg in the Wrong Number, thus she's by far the second Numberblock not to debut in her eponymous episode, and the first one to be shown before she was actually shown.
  • Her voice sounds VERY similar to that of Blockzilla, as they are both voiced by Beth Chalmers.
  • In the welsh dub of Numberblocks, Eleven (Un Deg Un in the dub) is male.
  • Eleven is one of the few Numberblocks to appear in different colours. The other two are One and Seven.


Fanart/Prototype Designs



History of Fanmade Elevens

Fanmade Elevens recap

Numberblocks characters

Discovered Numberblocks

Zero, One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Eleven, Twelve, Thirteen, Fourteen, Fifteen, Sixteen, Seventeen, Eighteen, Nineteen, Twenty, Twenty-One, Twenty-Two, Twenty-Five, Thirty, Forty, Fifty, Sixty, Seventy, Eighty, Ninety, One Hundred, One Thousand, Ten Thousand, One Hundred Thousand, One Million


Big Bad Square, The Terrible Twos, Octoblock, The Three Threes, Octonaughty, Step Squad, The Four Fours

Other Numberblocks

Twenty-Three, Twenty-Four, Thirty-Five, Thirty-Six, Forty-Two, Forty-Nine, Sixty-Four, Ninety-Nine, Two Hundred, Three Hundred

Irrational Numberblocks



Flapjack Snaffler, Blockzilla, Big Tum


Fluffies, Squarey, Numberblobs, Aliens, Rainbows, Flatlanders, Alphablocks


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