Hyoue Sasaki is a character from the Mononoke series. He is a servant to the Lord of Shioya, a position that defines his social standing and his role within the story. His outward appearance is notable for its disheveled quality; he has black hair that falls to his shoulders and black eyes. His face bears a scar, and his wardrobe consists of a traditional kimono, which together with his katana solidifies his image as a samurai. One of his eyes is typically visible through his unkempt hair.

Personality-wise, Hyoue is characterized as a loner and is soft-spoken. He tends to keep to himself, and in his leisure time, he carves wood, a quiet, solitary hobby that reflects his introverted nature. Despite this unassuming demeanor, he possesses a dangerous presence. This threat is amplified by his squeaky voice, which creates a stark and unsettling contrast with the weapon he carries. The combination of his katana and his odd, almost fragile vocal quality makes him an unpredictable figure to those around him. No further reliable information is available regarding his detailed background, specific motivations, key relationships with other characters, personal development throughout the narrative, or any notable supernatural abilities.