Gazeru

is an Anbu from Konohagakure.

Appearance
Gazeru has long, light-coloured hair and wears the typical Konohagakure-Anbu attire, including the tatoo on the right arm and a mask.

Abilities
As an Anbu, Gazeru is most likely a strong kunoichi. She was shown to be able to sense the chakra of others. She also wields a sword, implying skills in kenjutsu.

Invasion of Konoha Arc
She guards the Fifth Hokage during the invasion of Pain. She suggests allowing Pain to leave the village so they can organise a counterattack.

Trivia

 * In the anime, it was Yūgao Uzuki instead of Gazeru who was guarding Tsunade.