Primary

• Will A. Zeppeli Friend of Jonathan Joestar
• Will A. Zeppeli Grandfather of Caesar Anthonio Zeppeli
• Will A. Zeppeli Father of Mario Zeppeli

Extended

• Jonathan Joestar Father of Giorno Giovanna
• Jonathan Joestar Grandfather of Joseph Joestar (young)
• Jonathan Joestar Husband of Erina Pendleton
• Jonathan Joestar Father of George Joestar II
• Jonathan Joestar Owner of Danny
• Jonathan Joestar Grandfather of Jotaro Kujo
• Caesar Anthonio Zeppeli Grandson of Will A. Zeppeli
• Caesar Anthonio Zeppeli Friend of Joseph Joestar (young)
• Mario Zeppeli Father of Caesar Anthonio Zeppeli
• Mario Zeppeli Son of Will A. Zeppeli