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This page is about the character(s). For the episode, see Eleven (episode).

And one more is Eleven!

— Eleven's football chant

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

She is the first of the teen numbers and is an avid football player.


Eleven is made of ten white blocks and one red block. Her eyes are red, with her right eye notably being twice the size of her left. She also has pale red lips and green limbs. She wears aqua striped shorts, along with white socks and dark green shoes.

Eleven has two colored-variants featured when Twenty-Two splits, reflecting his red and blue color palette. While one Eleven retains her red block and border-coloring, her clothes are reflected to match a similar bright red color. The second Eleven instead takes on a dark blue color.


Eleven is an upbeat, high-spirited Numberblock who takes great pride and passion in football. She often spends much of her time practicing and competing in football games. Despite prioritizing football as her main passion, Eleven is very inclusive of her friends, often inviting others to play with her. She is extroverted and friendly, frequently jumping in to invite her friends to play with her. Eleven also tends to be rather easygoing, often following the plans and routines of others while showing support and encouragement.



  • 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.
  • Eleven notably bears many similarities to the Alphablocks character, K. Ironically, K is the 11th letter of the alphabet, and both are regarded as football players.
  • Eleven appeared as a cameo in The Wrong Number, walking around in the streets of the city towards the end of the episode. Her debut episode followed after, making her the second Numberblock to cameo before their introductory episode.
  • Eleven is one of the three Numberblocks to appear in different colours.