"I'll uncover it... the secret of those Steel Balls!" Male / 172cm / 19 years old He is a person for whom satisfying personal desires is more important than justice. Rather than being simply free-spirited or rude, he is fundamentally individualistic. He doesn't pursue his own sense of justice, and his character flaws often show through his jealousy, admiration, and even inferiority complex toward those stronger than himself. He is paraplegic and entered the Steel Ball Run to learn the secret of Gyro's Steel Balls. After meeting Gyro Zeppeli, he gradually changes into a more humane person. While getting on a horse is a struggle, once he's actually riding, he is said to be incredibly skilled despite his paralysis. His beloved horse is Slow Dancer. He was a participant in the Steel Ball Run.

"Rotation is infinite power." Male / Height unknown / 24 years old He has long blonde hair and wears an ochre-colored hat. His catchphrase is "Nyo-ho" / "Nyo-ho-ho." (Used when something interesting happens.) He has a bit of a flirtatious personality. However, he never lets a woman ride on his horse. He claims the Goddess of Liberty is riding behind him and would get jealous if he let another woman on. He likes teddy bears. He might cry if one gets torn. He plays a lot of pranks and often tells unfunny jokes. Johnny apparently plays along with them... (It's unclear if Johnny actually finds the jokes funny or is just humoring him.) First-person pronoun is "Ore." His beloved horse is Valkyrie.

"Every last one of them is guilty!" Male / 180cm / 20 years old He loves money. He has a fundamentally arrogant personality that looks down on others. He holds the title of the British horse racing world's young nobleman. He appears as a powerful rival to Johnny and Gyro. He possesses incredible talent for horse riding. He wears a hat decorated with the letters "DIO" and has long blonde hair. He doesn't bother to hide his selfishness. Rather, he proudly flaunts it and doesn't deny it. His beloved horse is Silver Bullet. Due to his Stand, he has a long, thick dinosaur tail.

"Dirty Deeds Done Dirt Cheap" Male / Height unknown / 43 years old He is the President of the United States. He displays charisma and bold decisiveness. He has a few... useless talents. For example, he can walk without making a sound, or he can stand on a mandolin and play it with his feet. He truly cherishes his home country and will do anything for its sake. He is blonde with long hair. The ends of his hair are curled like butter cookies. He wears a pink coat and clothes. When he appears, he says the strange phrase "Dojyaaa~n!" himself. It translates to something like "Ta-da!"

"From now on, I will hang you all from the trees." Female / Height unknown / 23 years old She is a woman disguised as a man. A unique individual who can be recognized as an ally by Diego, as well as by Johnny and Gyro. She cooperates only when necessary and acts rationally. She has pink hair in a blunt bob cut. She wears a hat with a mix of yellow and black, and a short hot-pink coat. Her beloved horse is Gets Up.