Miss Valentine is a woman with short blond hair and dark eyes (bright green in the anime).
She wears a yellow and orange hat, as well as a yellow dress with a lemon-like pattern, lemon earrings, and white high-heeled shoes. She also added a blue jacket with white stripes over this attire during the Little Garden arc. She is almost always seen carrying a bright green parasol with blue stripes.
She does not seem to take her job very seriously, greeting any situation with a lighthearted laugh. She generally allows her partner Mr. 5 do any necessary talking. Being a Baroque Works officer agent, she is quite confident in her abilities.
Her chosen method of dealing with Usopp — crushing him slowly and painfully by increasing her weight — shows her preference for unnecessary cruelty. She also dislikes being ignored, especially when she is attacking.