He is the grandson of Joseph Joestar and son of Holy Kujo. Sharp and always levelheaded, yet passionate in nature. He doesn’t need to speak to command his non-sentient Stand, Star Platinum. He says “good grief” whenever he’s annoyed, and never shows weakness. He always sounds blunt and cold, usually without any other emotions while also speaking quite disrespectfully yet casually. He never shows positive emotions or fear around strangers. He never stutters.