Japanese name: ジャイロ・ツェペリ
Romanized name: Jairo Tseperi}
Stand: Ball Breaker
Horse: Valkyrie
Status: Zombie (current), Human (formerly)
Birthname: Julius Caesar Zeppeli (Yulius Kaisar Zeppeli)
Birthdate: January 25, 1866
Zodiac: Aquarius
Date of death: January 19, 1891 (on Tomobiki)
Cause of death: Gunshot wound from Funny Valentine moved to his heart by D4C Love Train
Gender: Male
Age: 24 (physically); 152 (chronologically)
Eyes color: Red (Zombie); Blue (Human)
Hair color: Platinum blonde
Ethnicity/Nationality: Italian/Neapolitan
Height: 182 cm (6ft)
Birthplace: Naples, Italy
Occupation: Bodyguard (as Rianima's Spin Cowboy); Jockey (Part 7; formerly), Executioner (Part 8, formerly)
Likes: Johnny Joestar, Valkyrie, plush toys, making jokes or puns, pizza (with mozzarella), showing his gold-embedded teeth
Dislikes: Funny Valentine, lame or incompetent guys, sound of peeling apples
What his zombie body looks like: Gyro's torso has three stitched lines of wound converging to his heart, of which a hole is present on where the heart is. Bullet wounds are seen on his head too.
Title: The Legendary Executioner
Main theme: Gyro's theme (fan-made theme by Friedrich Habetler), Pizza Mozzarella song
Summary: Born within the prestigious Zeppeli family in the kingdom of Naples, Gyro was trained in the arts of the Spin and role of a doctor since he was young, and later when he became thirteen, Gregorio Zeppeli also taught him all about the service of being an executioner in service of the king. But when the time came for him to enact his first ever execution, it was in the hands of a little boy because he served a traitorous lord. Expressing sympathy and deeming it unfair the kid was framed, in spite of his father's advice not to let sentimentality get to him, he disobeyed him to join the Steel Ball Run race in order to give amnesty to the boy.
Partnering with a paraplegic ex-jockey and eventual best friend Johnny Joestar, Gyro went through a lot of tribulations challenging one of his father's teachings about the uncertainties in life, shaping his outlook and determination up to that point until his death, but not without teaching Johnny his final lesson in the art of Spin. Turns out, that isn't the end for this boisterous Zeppeli because Kotaro retrieved his body to his home reality and revived him alongside Johnny and Mamezuku so they become bodyguards of Franchouchou.
Not what Gyro expected his afterlife would be like, but hey, he ain't complaining because he's together with Johnny. Look out world! The Zeppeli bloodline is not dead, and he's riding out on a horse before you as proof!