Brook is an extremely tall skeleton dressed in formal attire complete with top hat and cane. Despite having no skin, his head still has an afro which he says is because his hair has deep roots. Brook's coat, top hat, pants, and afro, are black while the inner linings of his coat are yellow orange. The ribbon tied in between his coat and around his neck is blue. The outer covering of Brook's cane sword which he carries is purple. Also, due to his many years of seclusion his clothes have become somewhat tattered.
Before his death, Brook was a tall skinny 38 year old man with a rather distinctive face. He had a slight goatee on his chin and some side burns. He typically wore shades. On his forehead was a scar that slightly resembles a diagonal omega sign (Ω). This scar was retained in his skeleton state as a distinctive crack across his skull. Brook's facial appearance, accompanied with his style of clothing, resembles a type of appearance that is commonly associated with various music artists such as Ozzy Osbourne, Slash, and other musical celebrities with similar features.
In Gear Spirit, Brook is presented with a different color scheme than the one depicted in both the manga and anime. The color of the collar of his coat is gray while the ribbon and the frills coming out of his coat are purple. In some artwork within the game, Brook's nose socket is uncolored. The outer covering of Brook's cane sword is also colored red in the game. This color scheme is so because the game was developed before an official color scheme from the manga was presented.
According to Oda, Brook most resembles a horse. He is identified by the colors black and white, and he smells of tea
