Six, or 6, is an indigo (Bluish Purple) Numberblock who debuts in the episode with the same name.

She is voiced by Teresa Gallagher.


6 is a Numberblocks who likes dice and games. She also likes to rap and tends to rhyme as she speaks.


6 is the Numberblock made up of 6 indigo blocks. She has red eyes with 3 eyelashes on each, a pink mouth, and pink limbs. When she stands vertically, each of her blocks shows a different number of spots from 1 to 6. When aligned either 2x3 or 3x2, she has only one dot on each block.

Episode Appearances

  • Six (debut)
  • Seven
  • Eight
  • Ten
  • Just Add One
  • Blast Off
  • Counting Sheep (biggest number)
  • The Three Threes (doesn't speak)
  • Odds And Evens
  • Fluffies
  • The Two Tree
  • Numberblock Castle
  • Ten Green Bottles
  • Now We Are Six to Ten
  • Numberblobs
  • Building Blocks (smallest number)
  • Peekaboo!
  • Hiccups
  • What's the Difference?
  • Numberblock Rally
  • Five and Friends
  • Octoblock to the Rescue!
  • Ten Again
  • Flatland
  • Pattern Palace (biggest number)
  • The Legend of Big Tum
  • Mirror, Mirror
  • The Wrong Number
  • Eleven
  • Twelve
  • The Way of the Rectangle
  • Ride the Rays
  • Block Star
  • Fourteen
  • Tween Scenes
  • Step Squads
  • Fifteen's Minute of Fame
  • Balancing Bridge
  • Sixteen
  • Seventeen
  • Eighteen
  • Nineteen
  • Twenty
  • Tall Stories
  • Flights of Fancy
  • I Can Count to Twenty
  • Sign of the Times
  • Fun Times Fair
  • The Lair of Shares
  • Terrible Twosday
  • Divide and Drive
  • Fifty (doesn't speak)
  • Sixty's High Score
  • The Big One
  • One Hundred
  • More to Explore

Total number of appearances: 61


  • "Let's get stuck in, shall we?"
  • "I like to roll the dice!"
  • ”Let’s Roll!”

Prototype design

Gabe Sotillo's original design of 6 is male and dark blue and has orange hexagonal eyes, green arms, and orange legs. He also has 3 orange buttons and 3 green buttons and loves hexagons.

Momodriller's original design of 6 is violet (Purple) like 7's top block. She has purple eyes in the shape of the show's design. She also has orange lips, pink limbs, and 3 yellow freckles on each cheek. She also has a bee mark on her chest. It's guessed that Momodriller's original design of 6 likes hexagons and bees.

Charlie (NorthWest MathsHub3)'s original design of 6 has 3 yellow blocks and 3 black blocks, like a bee. It's guessed that Charlie's original design of 6 likes bees.


  • 6 is the first female Numberblock who is an even number.
  • 6 is the second Numberblock to sneeze, the first being 9. However, unlike 9, she doesn't lose a block when she sneezes, as seen in Counting Sheep.
  • 6 is usually seen arranged vertically and aligned 2x3. The only times she is aligned 3x2 are in Counting Sheep, Hiccups, and Mirror, Mirror.
  • The Three Threes and Fifty are the only episodes 6 does not speak in.
  • 6 and 60 are the only figured-out Numberblocks with eyes on the sides of their head.
  • 6 in her 2x3 form is different in certain episodes as the eyes are on top of her head and the mouth is upper.
  • 6's voice actor, Teresa Gallagher, also voices 0, 10, and 15.
    • 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)
  • She can form 35 shapes, which are called hexominoes.
    • If reflections and rotations are distinct, she can make 216 shapes.


Hexamino Gallery

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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