Three is a pink Numberjack and the youngest of the "main" Numberjacks. Up until recently, she has not been allowed to go on missions due to her young age. She is very enthusiastic and eager, but sometimes a bit impolite (for example, she tends to say, "Me, me, me" when she wants something). She also has a collection of objects that she admires the beauty of. 
Three sleeping

Three sleeping in "Interesting Times"