One

One, or 1, is the small red Numberblock. She is the main protagonist.

1 first appears in the episode with the same name.

She is voiced by Beth Chalmers.

Appearance
1 has a small red cube body with an eye on the front and a mouth. She also has two arms and two legs and has a number 1 on top of her. She appears in all the episodes and has the most appearances.

Personality
1 is sweet, curious, helpful, friendly, bubbly and clever. She loves finding things that are alone and normally calls them "one of something", while the other Numberblocks call something alone "a something" (e.g 1 would call one bee one bee while the other Numberblocks would call it a bee).

She sometimes feels sad since she only has one block, which means she can do fewer things than the others.

Episode Appearances

 * All except Building Blocks and The Way of the Rectangle

Total number of appearances: 58

Quotes

 * "1 wonderful world, and 1 me!"
 * "You're amazing!"

0
0 is after 1, and they have a nice relationship.

2
2 is the first number who 1 ever met who isn't a 1. They overall have a great relationship.

3
1 and 3 have a great relationship. 1 and 2 enjoyed 3's show, but sometimes, they can slightly be disappointed with her boastful personality, as shown in The Whole of Me.

4
1 and 4 have a nice relationship. They are square Numberblocks. In "Four", 4 paints 1 using squares.

5
1 and 5 have a nice relationship.

6
1 and 6 have a nice relationship.

7
1 and 7 have a nice relationship.

8
1 and 8 have a nice relationship. In "Double Trouble", 1 doubles up to 2, then to 4, and then to 8 in a doubling adventure, which leads to 8 splitting half by half down to eight 1's. Every time 9 sneezes out his middle block, he always splits into 8 and 1, which leads to 1 jumping back into 8's hole in the middle to combine into 9 again.

9
1 and 9 have a nice relationship. In The Three Threes, 9 splits into The Three Threes to open 1's honey jar.

10
1 and 10 have a fantastic relationship. When 10 was first introduced, 1 was surprised that 10 had a 1 on top. 1 was also pleased with 10 being a rocket.

Trivia and Counterparts

 * On Halloween 2017, a pumpkin was carved in the shape of Numberblock One.
 * 1 is the first Numberblock to not be made of other Numberblocks. The second being Zero.
 * This is because 1 fell from the sky as a small block until it turned into her.
 * There is a fanmade Numberblock posted on Twitter called "Zero point Five (0.5)" / Half (1/2) who resembles 1, but it is half 1's size and has no arms.
 * There is also a prototype design of Zero that heavily resembles 1, but it has an almost transparent block. This design was by Arifmetix.
 * 1 is the first Numberblock to ever be seen in the show.
 * 1 was originally white with black limbs and two eyes that resemble the eyes of Alphablock A or B from Alphablocks. Her Numberling was also in serif.
 * 1 is the first square number, cube number, triangle number, and polygonal number to appear.
 * 1 has the most copies shown at the same time, being 40, beating her previous record at 10 1's.
 * 1 is similar to the Pudding Monsters, due to them being small, red and are cyclopses. They also have the ability to become bigger characters by fusing.
 * In the Alphablocks episode UFO, An "Alphablock 1" appears during the episode. Some fans referred to it as a "Numberblock" and the term was eventually used for this show.
 * 1 is the first Numberblock to not be able to change her shape. The second being 0.
 * However, she can morph into 3D shapes, such as a frustum, as shown in "Hiccups".