Eleven

Eleven is made of ten white blocks and one red block with two red eyes, one twice the size as the other, red lips, green limbs, white socks, and dark green shoes. There was a blue variation too. According to SOSR, all 11s are female, but according to Punchcar63 and BrodyTheRedflower, red 11s are females and blue elevens are male, similar to how a male bird of paradise differs from a female one

Twelve

Thirteen

Fourteen

Fifteen

Sixteen

Seventeen

Eighteen

Nineteen

Twenty

Episode Appearances

 * The Wrong Number (cameo)
 * Eleven (debut)
 * Twelve
 * Thirteen (off-screen)
 * Tween Scenes
 * Fifteen's Minute of Fame
 * On Your Head
 * Ten's Place
 * Balancing Bridge
 * Seventeen (episode)
 * Eighteen (episode)
 * Nineteen (episode)
 * Tall Stories
 * Flights of Fancy
 * I Can Count to Twenty
 * Twenty One and On
 * Fifty
 * The Big One
 * More to Explore
 * The Many Friends of Twenty
 * Odd side Story
 * Total: 21