Ninety is a character with 90 blocks.
Ninety has 30 light grey blocks, 30 medium grey blocks, and 30 dark grey blocks, all with grey borders. He has what appears to be 3 strands of hair, all in each of the 3 shades of grey.
He has similar features to Nine, such as the big eyebrows and the greyish-blue limbs, eyes and lips. However, Ninety's eyes are rectangular because he's not all square.
He also has a pocket, which is where some of his tricks come out of.
He is a magician, according to the episodes he appears in. He sports a magic wand at times.
- He is the biggest multiple of 10 to have 2 digits.
| Numberblocks characters
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-Five, Forty, Forty-Five, Fifty, Sixty, Seventy, Eighty, Ninety, Ninety-Nine, One Hundred
Big Bad Square, The Terrible Twos, Octoblock, The Three Threes, Octonaughty, Step Squad, The Four Fours
Thirty-One, Thirty-Two, Thirty-Three, Thirty-Four, Thirty-Six, Thirty-Seven, Thirty-Eight, Thirty-Nine, Forty-One, Forty-Two, Forty-Three, Forty-Four, Forty-Six
Quarter-Pi, Half-Pi, Pi, Pau, Tau, Tro, Rho
Flapjack Snaffler, Blockzilla, Big Tum
Fluffies, Squarey, Numberblobs, Aliens, Rainbows, Flatlanders, Alphablocks