The bell is semi-translucent and encircled with several white, star-shaped markings. The wavy rim of the bell flares outward and is bright blue. Its tentacles appear gelatinous and give it a vaguely humanoid shape. Several tentacles mesh together forming the appearance of a cape or long hair, while four shorter tentacles resemble shorter hair and arms. Two long tentacles make up the legs of the human shape. According to its concept art, Nihilego's body is made of various types of glass. Thick.