Birthday: July 22
Blood type: A
Height: 154 cm
Favorite food: sweets
Disliked Food: spicy foods
Normally, Niko has quite an aggressive personality, but when she takes on her alternate personality she becomes a happy, upbeat character who is always smiling. Her catchphrase is "Nico Nico Nii!" accompanied with a pose. She often thinks a bit highly of herself but despite that, she is also caring.
A common joke in the series is that she's often ignored by the other members of μ's at her attempts at being the better idol.
Yazawa Niko was the Idol Research Club's president. In Episode 10 Niko is shown to be a very skilled cook despite her saying she has never cooked before. She is also interested in fashion.
(Source: Love Live! School Idol Project Wikia)
Note: "Niko Yazawa" is the correct spelling of this name per Hepburn romanization, which is used as a MyAnimeList standard.