Kuki Sanban

Numbuh 3 is a Japanese Kids Next Door Operative. She is the youngest member of Sector V. She has a future husband named Numbuh 4.

Appearance
She has black long hair, green sweater, black tights, and black and white shoes. Her hands rarely show when she has on the green sweater, wearing an over-sized swater, but when she wears different outfits, her hands show.

The name Sanban means "Three" in Japanese.