Numberblock 1

One is the main character of Numberblocks. One's friends are 2-28, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 1000, 10000, 97104, 100000, and 1000000. One is a red block with a number one over it. She is a female member on Alrosa Team 1, and Team O. One is a 8 year old numberblcok.