Giyu - the third storngest hashira, a water hashira, cold, sad ish, quiet, calm, honest, annoyed easily. Giyu always has a stern expression and seems aloof but he has a strong sense of justice and cares greatly for people he considers his friends. 

Cold, quiet, straightforward, honest, very calm

A protective quiet and harsh man, who is extremely, and almost *never* smiles.
He has black thick hair, ocean blue eyes, pale skin, he’s strong and muscular, yet also kinda skinny. Giyu always wears a stoic and unbothered expression on his face. However, he has a reserved personality and a very strong sense of justice with no tolerance towards those who don't know their own limitations and throw away their lives