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"I don't think I've seen Seven (character) before!"Four
This page is about the character(s). For the episode, see Seven (episode).

Seven or 7, is the Numberblock made up of 7 blocks. He first appears in the episode with the same name.

He is voiced by David Holt.


Seven has 7 blocks; each with the colors of the rainbow (with his head being violet, and his other blocks being the colors of the Numberblocks below him, One through Six), he once had violet coloring in his debut episode before the rainbow change his blocks to a rainbow, he also has 7 strings of multicolored hair, purple limbs, yellow rectangle-shaped eyes, and a long yellow mouth.


As a reference to the superstition, Seven is extremely lucky, being able to handle almost any situation with relative ease.

Seven is a joyous Numberblock and is proud of his luckiness. With his luck, he has no fear of any situation and can easily help his friends with it.

Episode Appearances

Total number of appearances: 68 + 2 (Incl. pictures)


Seven is seen vertical, horizontal, or 1R+2x3. Lucky!

2D (48/760)

Independent (46)
Component Only (2)

3D (1)


  • 7 is the first male Numberblock who is an odd number.
  • When 7 first appears in his debut episode, all his blocks are violet . But a rainbow turns all his blocks rainbow-coloured.
  • 7 is the biggest prime number in the second part of Season 1.
  • 7 is the second Numberblock to have something on his head, which is rainbow hair, the first being 3, wearing a red 3-pointed 2D-ish jester hat on her head.
  • The Three Threes is the only episode in which 7 does not speak, but there's a mistake that 9 sounds like him in one clip.
  • 7's debut eponymous episode is the only episode in which he is the biggest number, same with 4. Both 4 and 7 are also absent in the episode "What's My Number?"
  • 7 is the fourth Numberblock who speaks in a foreign accent, which is Welsh.
  • Just Add One is the only episode in which when 7 is arranged 1+2+2+2, his face is below his top block.
  • In the Cbeebies Magazine Issue 113, 7's Fact File mistakes him as a girl.
  • 7 can make up to 108 shapes.
    • He can make 196 one-sided shapes and 760 fixed shapes.
  • He is one of the Numberblocks that have a permanent change, the others are 2, 5, 8, 27, and 29.
  • The website's description of Seven is: "Lucky number Seven was hit by a rainbow and turned all seven colours. Somehow, everything just falls into place and turns out nicely when he’s around. How lucky is that!"[5]
  • He has a welsh accent.


  • "I'm the luckiest Numberblock in the world!"
  • "That was lucky!”
  • "Beginner’s luck!"
  • "Lucky me!"
  • "Rainbow time!"
  • "Look Out!"


Heptomino Gallery