| Character | Gallery | Fanmades | Quotes |
| “ | When there's nothing there to count, none is the amount. You've got zero! | ” |
— Zero, her debut |
Zero, or 0, is a Numberblock who has no blocks. She is voiced by Teresa Gallagher.
Appearance
Her design is compressed of only a foxy pinkish red mouth and a black "0" Numberling on top of it. This is because Zero literally means no things, meaning she has no blocks, and therefore is dimensionless and also has no possible block arrangements. Every other Numberblock has at least one block. She additionally lacks eyes and limbs. Numberblock One and One Hundred both have one eye while most of the rest have two.
Because Zero is basically absolutely nothing, she technically belongs in not one but four official Numberblocks clubs.
Her original character design, revealed on 1/4/2017 in a joke tweet, depicts her as only a numberling, without any mouth, eyes, or limbs at all. The numberling is slightly wider and notably less bold than the one in Zero's final design.
Personality
Zero likes to do nothing at all and make things disappear. Her personal feelings aren’t shown that much during the series rather than the former fact. She gets along well with One. Sometimes, when she gets provoked easily, she takes things to a whole new level.
Episode Appearances
Episodes in bold indicate that she plays a major role in that episode.
- Zero (debut)
- Fifteen's Minute of Fame
- On Your Head (cameo)
- Twenty (cameo)
- Thirty's Big Top (cameo)
- Land of the Giants (cameo)
- The Big One
- One Hundred (cameo)
- More to Explore
- Now You See Us
- One Giant Step Squad
- What If?
- 100 Ways to Leave the Planet
- About Time
- The Twelve Days of Christmas
- The Blocks v Blocks Games
- Odd Block Club (latest appearance)
Total number of appearances: 17
She has appeared in 10.06% of Numberblocks episodes, including the crossover specials.
Arrangements
Trivia
- She and One are the only Numberblocks that have all dimensions at once (excluding 0^0).
- Zero's catchphrase ("and nothing more!") is a reference to Ten's description of Zero during Series 2 (specifically the lyrics "I'm one ten and nothing more").
- Zero is the first, and currently only Numberblock to have no eyes.
- Zero is the only Numberblock who cannot change shape at all. While One cannot make different arrangements, she can shape-shift a bit, as seen in Hiccups.
- She is the first Numberblock numerically that doesn't appear in Series 6 nor Series 7.
- Zero is the only Numberblock whose name starts with Z.
- Zero can grab and hold objects without use of any hands, as the objects just float next to her.
- Interestingly, Zero's proper debut episode is a Red Level One episode, while the episode that introduces the concept of zero (Ten) is an Orange Level Two episode.
- She is the eleventh Numberblock to appear in Numberblocks, with the first ten being One-Ten.
- Regarding only Orange Level Two Numberblocks, she is the only Numberblock to appear in less than 50% of the episodes, including the specials.
- Zero appeared the most in Level 5, half of her entire coverage.
- Ironically, she appeared the least in Level One, shown in only 1 episode.
- Zero is the first female whole number to appear numerically, but the sixth to appear in the series, following One, Three, Five, Six and Ten.
- Her design in the April Fools 2017 joke had no mouth, and her Numberling was slightly wider and bigger.
- Zero has the same voice actress as Ten, Six, and Fifteen.
- Zero is the only Learningblock to have a mouth but no eyes.
- She is also the only Numberblock to be able to fly without any rockets, rays or anything else.
- Zero has unique powers than the natural Numberblocks.
- Teleportation: Zero can appear suddenly, as seen in her debut, "Now You See Us", "One Giant Step Squad", and "Odd Block Club".
- Deletion: Zero can remove objects when sometimes saying "Zero. Zero _(e)s". Her debut and "The Twelve Days of Christmas" show this.
- It is worth noting that things deleted by Zero can be restored by One as shown in Zero's debut. But it seems that the number of things in a group that Zero deleted could correspond to the Numberblock of that number.
- Manifestation: Zero can serve as a numberling digit for the multiples of 10, and can even pop out as them. This is seen in many of Zero's appearances, notably "On Your Head", "Twenty", "Thirty's Big Top", and "One Hundred".

