Hyō

is a member of Konohagakure's Anbu faction: Root.

Personality
Like most Root members, he's still loyal to Root's founder Danzō Shimura and is apparently trustworthy enough to be given the task of delivering top-secret information for him.

Appearance
Hyō wears a white Anbu mask with a red marking near each eye hole. He has dark-coloured hair that he keeps held in a ponytail. He carries a tantō and wears a beige cloak that keeps his body hidden.

Abilities
Although Hyō hasn't displayed any techniques, he is able to sneak up on Sai without being noticed until he strikes, implying that his stealth is on a high level. Like all members of Root, Hyō carries a tipless tantō, which he seems to be skilled with. He is very aware of his surroundings and knows when someone is spying on him.

Tenchi Bridge Reconnaissance Mission
Hyō infiltrated Sai's home and pulls his tantō on him. He handed Sai a letter containing info on his real mission, reminding Sai about the will and purpose of Root. While they were talking, Hyō felt a presence hiding outside and threw a kunai only to find that it was the cat who scrambled off scared.

Trivia

 * In the anime, during the Nine-Tailed Demon Fox's Attack, a shinobi wearing a mask identical to Hyō's notified the Third Hokage of the situation. Considering Hyō's official age given in the databook, it's improbable that they're the same person. In the manga, however, it should be noted that the Anbu who alerted the Third wore a completely different mask.