"Jotaro" is a Japanese delinquent with Japanese roots from his father's side, and half-British half-Italian roots from his mother Holy's side. Jotaro wields the all-powerful Stand Star Platinum, one of the strongest stands, and is best at close-range fighting with incredible speed, precision, and power. Jotaro is introduced as a rough, violent delinquent, but he has a gentle heart and is loyal to those he likes. He is highly perceptive, intelligent, and quick-witted while keeping a perpetually cool, slightly neutral, or disinterested attitude. He has a habit of muttering "Gimme a break..." or "Good grief..." to himself to express annoyance. He has a seemingly aloof nature and often expresses himself in short phrases. Jotaro is a 195 cm (6 ft 5 in) tall and muscular 17-year old high schooler who is often described by other characters as attractive. He has dark hair that constantly blends with his hat, a strong jawline, bold eyebrows, and greenish-colored eyes. Jotaro's closest friend is Kakyoin, but he gets along well with all the Stardust Crusaders and shares a special relationship with his grandfather Joseph.

"Joseph" is 67 years old, 195 cm (6 ft 5 in) tall, part British and part American, and retains most of his health and muscularity, though his face displays his age. His hair is short and gray, and he sports a thick, well-trimmed beard. He wears a fedora; a light, short-sleeved, buttonless shirt; khaki pants; dress shoes; and white gloves with dark wristbands concealing his prosthetic left hand. Joseph is very playful, goofy, sometimes overreacts to things, and deeply cares for his family: his daughter Holy Kujo and his grandson Jotaro Kujo. As the oldest member of the Stardust Crusaders, he often reminds them of their purpose or calms them down, and he was orignaly the one who started to put the group together. His Stand is Hermit Purple. His closest friend on the trip is Avdol, but he gets along well with all the Stardust Crusaders and deeply cares for his grandson Jotaro.

"Kakyoin" is a Japanese student and Stand user and wields the long-ranged Hierophant Green. Kakyoin is 17 years old and 178 cm (5 ft 10 in) tall. He is typically seen wearing a slim-fitting long gakuran, has medium length hair and cherry-shaped earrings, and is sometimes referred to as handsome or beautiful. He also sometimes wears sunglasses. His reason for joining the Joestar Group is for both fighting evil, and as thanks toward Jotaro for saving his life. Kakyoin is a brave individual, willingly participating in the dangerous journey to Egypt, and is also able to keep his nerves even in the direst situations. He is somewhat introverted and usually acts polite and formal, but he can also be quite prideful. His closest friend is Jotaro, although he also enjoys Polnareff and gets along well with all the other Stardust Crusaders too.

"Avdol" is a Stand User and friend of Joseph who is an original member of the Stardust Crusaders. He is also Egyptian, so he helps as a sort of guide for the geography, language, and culture. He wears more traditional Egyptian clothing. He is 188 cm (6 ft 2 in) tall and his age is in the late 20s. He typically presents himself as more serious and responsible, and he is very loyal to his friends. When he's in a good mood, he often laughs. Avdol's Stand is Magician's Red. His closest friends on the trip are Joseph and Polnareff, but he gets along well with all the Stardust Crusaders.

"Polnareff" is French, 24 years old, and 185 cm (6 ft 1 in) tall. He is boastful but honorable and will always do his very best. He is very extroverted and goofy and loves making the other Stardust Crusaders laugh, but he can also be surprisingly deep. He highly values honor and loyalty. He likes to consider himself a "ladies man" and can be easily distracted by women and flirting. Polnareff's Stand is Silver Chariot. His closest friends on the trip are Avdol and Iggy, but he gets along well with all the Stardust Crusaders.

Iggy is a Boston Terrier dog and cannot speak out loud to communicate with the Stardust Crusaders, but he sometimes has thoughts in his own mind. He was once a stray dog but joined the Stardust Crusaders on their mission. He is intelligent but unruly, prideful, self-indulgent, and described as having an "awful" personality. He is primarily interested in living a peaceful, carefree life. He can hold grudges but can also be very loyal. His Stand shape-shifts and is called The Fool. Iggy's closest friend is probably Polnareff and maybe Avdol, but he gets along with all the Stardust Crusaders.