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The naughty Terrible Twos are making custard pies and Eight is tangled up. Can 1, 2, 3, two 4's, 5, 6, 7 and 8 save the day and stop 4 Terrible Twos making Octonaughty and defeat him and put him in the pie? Learn how to make 8 with the Numberblocks.


It starts with the Terrible Twos making custard pies. Eight crashes in through the roof and catches them. The Twos throw the pies at Eight, but he misses. Then the blue-masked Terrible Two lassos Eight with a rope. He tries to break the rope, until the purple-masked Terrible Two tells him that his powers are useless because the rope is made of pure octonite, an element that disables his powers.

However, Eight signals the Octo Signal and his friends will be here any moment. The blue masked Terrible Two tells that his friends will fall into The Terrible Twos‘ troublesome traps and does an evil laugh after. Eight doesn’t seem so sure. Outside, the Numberblocks 1-7 see the signal and enter the Terrible Two's Lair. Seven and One enter the first door, but they fall in a trapdoor. Seven doesn’t think landing into it was lucky, but that was...

7 + 1 = 8

Eight leaps out of the trap, before he separates into Seven and One.

Six and Two enter the second door. The room was full of snakes and ladders, Six's favorite game. Six rolls a dice, which shows 2. They move two spaces. Two thinks someone’s cheating but unlucky for them they were startled by snakes and they slide down on them.

6 + 2 = 8

Eight climbs the ladders until he reaches the top. He then separates into Six and Two.

Five and Three enter the third door. There's a cage hanging from the ceiling. Three and Five are not meant to walk under the cage. Just then, Three sees a triangle shaped spotlight and Five tells Three to resist it but she hops on anyway. Five then sees a star shaped spotlight and gets her guitar out and plays a tune. Suddenly, the cage catches them. Three wasn’t finished with her juggling but she knows the Grand finale.

5 + 3 = 8

Eight bends the cage bars to free himself before he separates into Five and Three.

Four enters the fourth door. He looks in a magic mirror to clone himself. The two Fours then get trapped in a giant bubble but they know of a strategy.

4 + 4 = 8

Eight pops the bubble before he separates into two Fours.

Meanwhile, the Terrible Twos then try to dunk Eight in a giant custard pie, until the Numberblocks 1-7 stop them. One and Two press a button which frees Eight. But the Terrible Twos have a trick or two up their sleeves. They use two magic mirrors.

2 + 2 + 2 + 2 = 8

In other words...

2 x 4 = 8

Octonaughty appears! Eight prepares to fight him, while 1-7 assemble into four Eights. Octonaughty tries to escape, but he doesn’t know what‘s down in the pit and falls into the pie. The Numberblocks 1-8 laugh at his defeat.


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  • Four stays as a square the entire episode.
  • This is the first, if not only time that equation magic is used in comic style.
    • In this style, the Numberlings are outlined white.
  • This is the first time there are more than two Eights. The second is “How Many Tens”
    • There are six Eights in one scene; five are Octoblocks and one is Octonaughty.
  • Octonaughty is the first villain to first appear in Season 3, if you don’t count the last five episodes.
  • This is the fourth episode Eight is the biggest Numberblock.
  • This is TSRITW’s second favorite episode of Season 3.
  • This episode is Glorysia Melody's most favorite episode. Being a second place.
  • Octonaughty is the opposite of Octoblock as he counts in reverse and he has a more high pitched slang voice than the regular Octoblock.
  • Five left her guitar in the cage.
  • 9 and 10 are absent in this episode. The scene where one of The Terrible Two's are doing an evil laugh was cut for being too dark.


  • Octonaughty’s name might be a reference to another show on CBeebies, Octonauts.
    • He is also a reference to the Joker, from the Batman series, as they are both opposites to the hero.
  • The Octo Signal refers to the Bat Signal, from Batman.
  • "Octonite" is a reference to "Kryptonite", a fictional element in the Superman series that disables the eponymous hero's powers.
  • The Terrible Twos calling Eight "Spiderblock" is a reference to Spiderman and Two accidentally calling Octoblock "Spiderblock".
  • Eight's rallying cry "Octoblocks assemble!" refers to "Avengers assemble!" from Marvel's Avengers.



Numberblocks - Octoblock to the Rescue! 💥8️⃣

The Terrible Twos are back.

Numberblocks episodes
Here are all the Numberblocks episodes.

Series 1

High Five!

One, Another One, Two, Three, One, Two, Three!, Four, Five, Three Little Pigs, Off We Go, How to Count, Stampolines, The Whole of Me, The Terrible Twos, Holes, Hide and Seek

Ten out of Ten

Six, Seven, Eight, Nine, Ten, Just Add One, Blast Off, Counting Sheep, Double Trouble, The Three Threes, Odds and Evens, Fluffies, The Two Tree, Numberblock Castle, Ten Green Bottles

Series 2

Number Fun

Once Upon A Time, Blockzilla, The Numberblocks Express, Fruit Salad, Zero, Now We Are Six To Ten, Numberblobs, Building Blocks, Peekaboo!, Hiccups, What's the Difference?, Numberblock Rally, Five and Friends, Octoblock to the Rescue!, Ten Again

Fifteen and Friends

Flatland, Pattern Palace, The Legend of Big Tum, Mirror, Mirror, The Wrong Number, Eleven, Twelve, The Way of the Rectangle, Ride the Rays, Block Star, Thirteen, Fourteen, Fifteen, Tween Scenes, Step Squads

Series 3

Season 5

Fifteen's Minute of Fame, On Your Head, Ten's Place, Balancing Bridge, Sixteen, Square Club, Seventeen, Eighteen, Loop the Loop, Nineteen, Twenty, Tall Stories, Flights of Fancy, I Can Count to Twenty, Heist

Season 6

Sign of the Times, Fun Times Fair, The Lair of Shares, Terrible Twosday, Divide and Drive, Twenty-One and On, We're Going on a Square Hunt, Thirty's Big Top, Land of the Giants, Fifty, Sixty's High Score, The Big One, One Hundred, One Thousand and One, More To Explore

Upcoming (confirmed)


Numberblocks Theme Song

Fourth Wall Breaks

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