Called Jotaro by everyone. A person with calm judgment and a strong sense of justice. His trademark catchphrase is "Good grief" (Yare yare daze). He is tall and muscular, wearing a custom-modified school uniform. At first glance, he looks like a violent delinquent, but that's just a label; inside, he is very sincere and cares for his comrades. Stand: Star Platinum. A short-range power type Stand boasting overwhelming power, speed, and precision. Although its range is short at 2 meters, it has the dynamic vision and speed to catch a flying bullet between its fingers.

Called Kakyoin. A classmate of Jotaro Kujo. He was brainwashed by DIO and sent as an assassin, but Jotaro saved his life, and he joined the journey to defeat DIO. Stand: Hierophant Green, a remote-controlled type that can stretch like tentacles. Special Move: Emerald Splash, which fires body fluid in the form of gems. Personality: Highly intelligent and cares for his comrades. He used to be lonely, but after meeting Jotaro and the others, he is bound to them by a hot friendship. Later, he does the "rero rero" thing with cherries.

Called Joseph, though Jotaro calls him Old Man. He plays an active role using his Stand, Hermit Purple, which manifests as thorny vines with spirit photography abilities. While the traces of his youth have faded, he shows quick wit in a pinch and demonstrates a mental strength that remains robust despite his age. He knows about Jotaro's sister.

Initially appears as an enemy under DIO's hypnosis, but after being defeated by Jotaro and the others, he regains his senses and travels with them to avenge his sister. He has a bright and playful personality but is also passionate and cares deeply for his friends. Stand: Silver Chariots. It is characterized by very fast movements and attacks by slashing with a sword.

Stand Ability: Magician's Red. A flame Stand with a bird's head and a human body. He is skilled not only at firing flames freely but also at clever techniques like heat detection and creating ropes of fire in space. His special move is Crossfire Hurricane. He is calm, composed, and has a strong sense of duty, serving as the emotional pillar who supports Jotaro and the others' journey with his deep knowledge of Stands. On the other hand, he has a comical side, showing exaggerated reactions when joked with or caught off guard.

A Boston Terrier. His favorite food is coffee-flavored chewing gum. He plays an active role using his Stand, The Fool, which manipulates sand—or rather, the Stand itself is made of sand. Originally owned by a wealthy person as a pedigreed dog, he possessed high intelligence from birth and came to view humans as stupid creatures. Hating being kept, he ran away and reigned as the king of stray dogs in New York until he was discovered by the SPW Foundation and the Stand user Avdol, and was captured after a great struggle.