Number 31
Portrayed by:
Emma Bates (uncredited)
First appearance:
Gallery of Number 31 images (0)

Number 31 is a one-night-stand of Barney's and the mother of his child.

In a deleted scene from Last Forever - Part Two she appears in the bar. When Barney realizes that August has 31 days, he hits on her by pretending he has one day left to live.

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