Eight, or 8, is a character who appeared in Numberblocks. He is well known for his alter-ego, Octoblock.

8 first appears in the episode with the same name.

He is voiced by Marcel McCalla.


8 is the Numberblock made up of 8 magenta blocks, with 8 octopus-like limbs and a dark magenta (purple-ish in Series 2) infinity symbol-shaped pair of goggles with 8 points, 4 on each side.

Episode Appearances

  • Eight (debut)
  • Nine
  • Ten
  • Just Add One
  • Blast Off
  • Double Trouble (biggest number)
  • The Three Threes
  • Odds and Evens
  • Fluffies (biggest number)
  • The Two Tree
  • Numberblock Castle
  • Ten Green Bottles
  • Now We Are Six to Ten
  • Numberblobs
  • Building Blocks
  • Peekaboo!
  • Hiccups
  • What's the Difference?
  • Numberblock Rally
  • Five and Friends
  • Octoblock to the Rescue! (biggest number)
  • Ten Again
  • Flatland
  • The Legend of Big Tum
  • Mirror, Mirror
  • Eleven
  • Twelve
  • The Way of the Rectangle
  • Fourteen
  • Fifteen
  • Fifteen's Minute of Fame
  • Balancing Bridge
  • Sixteen
  • Seventeen
  • Eighteen
  • Nineteen
  • Twenty
  • Tall Stories
  • Flights of Fancy
  • I Can Count to Twenty
  • Terrible Twosday
  • Fifty
  • Sixty's High Score
  • The Big One
  • One Hundred
  • More to Explore

Total number of appearances: 46



He is an 8 with green tentacles and a green mask. He has small pupils and big teeth. He only appeared in Octoblock To The Rescue but died in the pie in there too.


  • 8's way of being a spider in his debut episode is a reference to Spider-Man.
  • 8's catchphrase is "Octoblock, (command), 1-2-3-4-5-6-7-8, (said command)!"
  • 8 is the second Numberblock to have eyelash-like points on an eye, the first being 6. It is possible that his "eyelashes" are actually parts of his mask.
    • Just like 2's glasses might be his real eyes, it is also possible that his mask is his real eyes.
    • When 8 is first seen, many viewers mistakenly think he is a girl, due to his body color (which being pink) and eyelashes.
  • There is another "Octoblock" in the real world, which is a round xylophone with 8 keys.
  • 8 is the only Numberblock greater than 5 who can make more than 3 arrangements in the first series.
  • 8 is currently the biggest Numberblock voiced by Marcel McCalla.
  • 8 had a continuous error where he had 4 normal limbs, especially whenever 9 sneezes. The episodes 8 had the error are in:
  • So far, 8 makes the most shapes out of all the Numberblocks, even more than 5.
    • To prove this, In 6's verse of 8's song, you can see all the shapes 8 can make in the background.
    • 8 would have 369 shapes, because there are 369 possible octominoes.
      • If rotations and reflections are also distinct, there are 2725 shapes Octoblock can make.
  • 8 in Series 2 has a lighter-coloured mask.
  • According to Now We Are Six to Ten, 8 wasn't Octoblock until he got tickled by a radioactive octopus.
  • 8 is capable of generating the Octo Signal with his Numberling.
  • 8 is the first Numberblock to make diagonal shapes (his "Bend" Form (zigzag) and his "Pop" form (which is just the donut, or square-with-hole, but diagonal))


  • "Octoblock, (command), 1-2-3-4-5-6-7-8, (said command)!"
  • "Have no fear!/Never Fear Octoblock is here!"
  • "1, 2, 3, 4, 5, 6, 7, 8! 8 arms, or are they legs? Whatever they are, I like them! I am 8, and this is great!"
  • (as Octonaughty) "Octonaughty, (command), 8-7-6-5-4-3-2-1, (said command)!"
  • "Octoblocks assemble!"

Prototype Designs

Gabe Sotillo's original design of 8 is pink and is a cyclops like 1. He has a dark pink unibrow, a blue octagonal eye, dark pink lips, blue limbs, and a bow tie with 8 points. It is guessed by Gabe that he loves octagons.

Lauraadshead1's original design of 8 is dark green with lighter green eyebrows, eyes that are rectangular, lips, and limbs in a similar fashion to 4. It is guessed that Lauraadshead1's original design of 8 is 4's cousin. He also highly resembles 4 in this design. but the number after 8 took the similarity instead.


Octomino 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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