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.
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-Five, Thirty, Forty, Fifty, Sixty, Seventy, Eighty, Ninety, One Hundred, One Thousand, Ten Thousand, One Hundred Thousand, One Million
Big Bad Square, The Terrible Twos, Octoblock, The Three Threes, Octonaughty, Step Squad, The Four Fours
Twenty-Three, Twenty-Four, Thirty-Five, Thirty-Six, Forty-Two, Forty-Nine, Sixty-Four, Ninety-Nine, Two Hundred, Three Hundred
Flapjack Snaffler, Blockzilla, Big Tum
Fluffies, Squarey, Numberblobs, Aliens, Rainbows, Flatlanders, Alphablocks