Appearance: A tall, athletic high school student who wears a customized, modified navy school uniform kept open at the chest, decorated with a gold heart and anchor pin. His most defining feature is his meticulously groomed, retro pompadour hair, which he wears as a tribute to a stranger who saved his life as a child. Personality: Kind-hearted, friendly, and laid-back, Josuke acts like a typical teenager who cares about gaming, shoes, and fitting in. However, insulting his hair triggers an instant, unhinged rage where he attacks without hesitation. He is fiercely protective of his hometown, Morioh, and his friends. Stand — Crazy Diamond: Ability: High-speed, close-range power with the unique ability to restore or repair matter to a previous state. It can heal injuries, fix broken objects, or fuse things together in distorted ways when Josuke is angry. It cannot heal Josuke himself or bring back the dead. Stand Appearance: A muscular, humanoid Stand with pink armor plating, silver heart-shaped padding over its head, chest, and joints, and a helmet reminiscent of an athletic guard or gladiatorial mask.

Appearance: A tall, muscular teen with short, dark hair styled in a pompadour with shaved sides and two visible facial scars framing his nose. He wears an altered, dark high school uniform adorned with currency symbols ($ and ¥) on his collar and chest, along with the kanji for "billion" on his shoulder. Personality: Loud, impulsive, and notoriously bad at critical thinking, Okuyasu often relies on others to make complex decisions. Despite starting as an antagonist, he quickly becomes Josuke's loyal, warm-hearted best friend. He wears his heart on his sleeve and exhibits deep emotion and sincerity. Stand — The Hand: Ability: Anything hit or swiped by its right hand's palm is instantly erased from existence. When space is erased, surrounding space instantly closes the gap, pulling objects or people rapidly toward Okuyasu like a teleportation pull. Stand Appearance: A robotic-looking humanoid with a sleek white and dark navy color scheme. It features large shoulder pads, a helmet resembling a knight's visor with a vertical line down the face, and a distinctive pattern across its right hand.

Appearance: Noticeably short and unassuming, Koichi wears a neat green Budogaoka High School uniform. His hair evolves throughout the series alongside his personal growth, transitioning from a neat, flat style to a spiked, sweeping look reminiscent of a Super Saiyan. Personality: Polite, timid, and cautious at first, Koichi gradually develops immense courage and resolve when pushed to defend others. His humble demeanor masks a strong moral compass, earning the deep respect of senior Stand users like Jotaro and Rohan. Stand — Recho / Echoes (Act 1, Act 2, Act 3): Ability: An evolving "Act" Stand. Act 1 writes sound effects onto surfaces that play aloud continuously. Act 2 turns written sound effects into physical phenomena . Act 3 (3 Freeze) applies immense gravitational weight to a single target within a short range. Stand Appearance: Act 1: An elongated, tail-bearing creature resembling an insect larva or serpent shell. Act 2: A sleeker, bipedal crustacean-like form with a tail and detachable tail tip. Act 3: A small, fully humanoid Stand wearing pants and a rounded hat, capable of speech and possessing a distinct snarky attitude.

Appearance: A trendy, stylish young manga artist with green hair styled in a distinctive, swept pompadour held by a metallic headband. He wears fashionable, asymmetrical high-fashion outfits that change frequently, often featuring pen-tip motifs like pen nib earrings. Personality: Arrogant, eccentric, and self-centered, Rohan is obsessed with capturing real human experiences to make his manga, Pink Dark Boy, as realistic as possible. He acts standoffish toward Josuke, but his fierce dedication to truth and art leads him to fight alongside the group to track down Morioh's serial killer. Stand — Heaven's Door: Ability: Turns a person’s body or face into pages of a physical interactive book. Rohan can read their entire history, memories, and secrets, or write absolute commands on their pages which the target is physically forced to obey. Stand Appearance: A small, delicate humanoid figure dressed in a white suit and top hat, styled after the protagonist of Rohan's own manga series.

Appearance: Standing over 6 feet tall, the protagonist of Part 3 returns in a sleek, white trench coat paired with a matching white flat-topped cap that blends seamlessly into his dark hair. He wears a dark shirt with gold accent pins and multiple belts. Personality: Cool, stoic, and highly intelligent, Jotaro serves as the experienced mentor figure in Part 4. While quiet and emotionally reserved, he acts as the tactical backbone of the group, keeping a cool head under extreme danger. Stand — Star Platinum: The World: Ability: Extremely powerful, precise, and fast close-range Stand that excels in physical combat. It possesses the ability to stop time for up to 1–2 seconds, giving Jotaro an unbeatable tactical advantage. Stand Appearance: A tall, muscular, golden-skinned humanoid figure with long flowing dark hair, a loincloth, metallic shoulder armor, and gloves. It looks like a warrior deity.