Ten, or 10, is a Numberblock who debuts in the episode with the same name.

She is voiced by Teresa Gallagher.


10 is the biggest of the Numberblocks from 1 to 10. She can turn herself into a rocket & fly into space.


10 is made of ten white blocks with a red border. She has star-shaped red eyes and pink lips. She has dark red limbs and wears two gloves in her block colors. Sometimes her 1-block outlines disappear, which makes her a 10-block.


Total number of appearances: 52

Prototype design

Gabe Sotillo's original design of 10 is male and is gray with dark gray lips and limbs. His star-shaped eyes and gloves are light blue.

Katy Wilson's original design of 10 is purple.


  • 10 is usually seen arranged vertically and aligned 2x5. The only time she is arranged in a triangle (1+2+3+4) is in her eponymous episode Ten, the episode Building Blocks, and the episode Step Squads.
  • In the intro and some episodes, 10 stays standing vertically when she should be aligned 2x5 since she is a composite Numberblock. However, it is possible that the purpose of her often standing vertically is to show that she is the biggest Numberblock out of the first ten. These are the following episodes where she is the only composite Numberblock to stay arranged vertical:
    • Theme song (Ten out of Ten version)
    • Blast Off
    • The Three Threes
    • Numberblocks Castle
    • Ten Green Bottles
    • Numberblobs
    • Peekaboo!
    • What's the Difference?
    • Five and Friends
  • Her voice actor, Teresa Gallagher, also voices 0, 6, 15, 60 and 10,000.
    • Her voice actor also voices:
      • Some female Alphablocks in Alphablocks
      • Darzi (Disney's The Jungle Book)
      • Dashi (Octonauts)
      • Nicole Watterson (Cartoon Network's The Amazing World Of Gumball)
      • Egbert (Poppy Cat)
      • Noddy (Noddy in Toyland)
      • Miss Chatterbox, Miss Daredevil, Miss Naughty (Season 2), and Miss Whoops (UK Version of The Mr. Men Show)
      • Emily, Rosie, Belle, Mavis, Annie, Clarabel (UK Version of Thomas & Friends)
      • Lucy Selby (Postman Pat The Movie)
      • Mater's Computer (Disney's Cars 2)
      • The Tiddlytubbies(Teletubbies)
  • 10 and 5 are similar in some ways.
    • They both wear gloves, but 5 has only one glove, while 10 has two gloves.
    • They both come after a square number.
    • They are both the biggest number in their respective seasons.
  • 10's numeral means:
    • 2 in Binary.
    • 4 in Quaternary.
    • 6 in Senary.
    • 8 in Octal.
    • 12 in Duodecimal.
      • In the Duodecimal system, the numeral for 10 is a different symbol and is named "dek".
    • 16 in Hexadecimal.
      • In the hexadecimal system, the numeral for 10 is A.
    • 20 in Vigesimal.
  • 10 somewhat resembles red pencil sweets, except the direction is different.
  • A notable change in Season 3 is that her helmet becomes red.
  • The main reason why Ten doesn't resemble One thoroughly except for the colours is because she doesn't have "One" in her name. If she was called "One Ten", she would resemble One more.


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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