Twenty-One

Twenty-One
Debut	I Can Count To Twenty (compound) Twenty-One and On (figured-out) The Treasure of Hexagon Island (Captain Hexbeard)
Latest Appearance	The Treasure of Hexagon Island
Pronouns	she/her
Number (in blocks)	21 blocks
Factorization	'"`UNIQ--postMath-00000001-QINU`"'
Main Block Shape	3x7
Numberblock Select
Previous	Twenty
Next	Twenty-Two

Twenty-One, or 21, is a character that is made of 21 blocks. She is voiced by Emma Tate.

Appearance

Twenty-One originally appeared as literally "Twenty+One". Most fans argued that it wasn't official. This theory was correct. Twenty-One wears camping luggage and a green tylorean hat with three rainbow coloured "feathers", because she is 3x7. She wears a stepmask because she is the 6th step squad, and two boots, apricot and red.

Episode Appearances

• I Can Count to Twenty (compound)
• Twenty-One and On (compound and figured-out)
• We're Going on a Square Hunt (compound and figured-out)
• The Big One (compound)
• More to Explore
• How Rectangly!
• The Team Factor
• Hidden Talents
• Making Patterns
• Club Picnic
• Too Many Threes
• Circus of Threes
• Figure It Out
• Steps Versus Squares
• One Giant Step Squad
• 100 Ways to Leave the Planet
• The Treasure of Hexagon Island (debut of "Captain Hexbeard" alter-ego)

• • Total: 15 (figured-out) 4 (compound)

Fanmade Designs

TSRITW's design is a skeleton.

Arifmetix's design is swamp green with dark green lips, limbs and teardrop eyes. He is called Camoblock (camouflage) and can make a rainbow transformation to surprise his friends.

MDZ’s design is rainbow and 3 blocks wide (7x3).

Tungster's design has orange limbs and orange goggles.

Mr. Yokai's design is a robot who has many robotic uses. Mainly robot vision and bringing out ball launchers.

thatninjaw's design is a 3 x 7 rectangle, but with a red block on the third h\wide block.

Trivia

Twenty and One

• 21 was the first Numberblock to have more than two eyes and one mouth.
  • They were also the first Numberblock to have two faces.
• The fact that the 21 in "I Can Count to Twenty" is just 20 and 1 conjoined reflects how the Alphablocks form digraphs and trigraphs in their show (For example: Q conjoins herself with U to form the digraph "qu"; H, with C, S, and T, form "ch", "sh", and "th" respectively; I, G, and H form the trigraph "igh"; two O's coinjoin with each other to form "oo", etc.).

Twenty-One's own character

• Twenty-One is the first Numberblock to exceed Twenty.
• She is the second character to have a permanent step squad mask. The first being Fifteen.
  • One, Three, Six and Ten had step squad masks in Step Squads, but they weren't permanent.
• Twenty-One is the first multiple of 7 to be female. The 2nd is Twenty-Eight, and the third one is Forty-Nine.

Numberblocks characters

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Numberblocks	Discovered	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-Three, Twenty-Four, Twenty-Five, Twenty-Six, Twenty-Seven, Twenty-Eight, Twenty-Nine, Thirty, Thirty-One, Thirty-Two, Thirty-Five, Thirty-Six, Forty, Forty-Five, Forty-Nine, Fifty, Fifty-Five, Sixty, Sixty-Four, Seventy, Eighty, Eighty-One, Ninety, One Hundred
	Undiscovered / Non-physical	Forty-Two, Ninety-Nine, Two Hundred, Three Hundred, Nine Hundred, One Thousand, Seven Thousand, Ninety Thousand, Seven Million, Orders of Magnitude, Compound Numberblocks
	Alter-Egos	The Terrible Twos, Octoblock, The Three Threes, Octonaughty, Step Squad, The Four Fours
	Non-integers	Pi
Monsters		Flapjack Snaffler, Blockzilla, Big Tum, Twangle
Times Tables		One Times Table, Two Times Table, Three Times Table, Four Times Table, Five Times Table, Ten Times Table
Other		Fluffies, Squarey, Oblongy, Numberblobs, Aliens, Rainbows, Flatlanders, Sheep, Birds, What-Iffer, Rex and Rekenrek, Alphablocks, Colourblocks