More info

Eye Color: Light blue/Red(once half-demon cells activate)
Height: 5'11"
Weight: 184
Abilities: Breath of the Wolf, demon cell activation (Haku's body contains cells of a human that half infused with demon cells, instead of the cells completely taking over they instead lie mostly dormant, until they are activated through extreme pressure. They can enhance Haku's abilities further beyond human limits and even possible demon blood art utilization. This state is very damaging as his body is essentially fighting itself and shortens his lifespan each time it is activated.)
Weapons: nodachi 39", nichirin nodachi 40" (whereabouts: Demon Slayer HQ)
Clothing: Black kimono robe top and black pants (styled after a western suit), black tabi and sandals, red haori
Weaknesses: nodachi (close quarters nearly impossible, heavy, draw speed), Demon cell activation (damaging to body, exhausting requires long rest afterward)