Buddy blocks

A Buddy Block is a living block.

A Numberjack and his/her Buddy Blocks have the same number and color; for example, One has one purple Buddy Block, Six has 6 Buddy Block. Zero is the only Numberjack who has no Buddy Blocks.

Debuts
Getting Heavy - 3, 4, 5, 6, 9

Out Of Order - 1, 2