Jonathan Joestar

As a twenty-year-old adult, Jonathan is a tall (195 cm/6'5"), extremely muscular individual with a gentlemen's poise. His typical attire tends to reflect his noble background, characterized by stylized tunics over long-sleeve shirts. Reoccurring articles of clothing include a cravat, bow tie, thick boots, and a vest. While he's not depicted bearing the Star Birthmark in the manga, adaptations like the 2000 OVA and the 2012 anime depict him with it. At home, Jonathan wears semi-formal attire consisting of a collared shirt, tie, and jacket with rolled-up sleeves.

Regarding Jonathan as a character Araki has stated that Jonathan was difficult for him to design.[17] He wanted to create a "first Joestar" that could function as a symbol of purity and dignity rather than a unique, fresh character. This is reflected in his goals and character, Jonathan strives to become a "true gentleman." He carries his Joestar name with pride, never betraying the code of conduct he has set for himself, and will treat any fellow human with respect unless they prove evil. As a gentleman, Jonathan is also kind and positive. Jonathan has a mindset where he tries to imagine the consequences his actions would have on other people, even if they appear to be enemies.[20] He is gentle and sympathetic, feeling pain even as he vanquishes a zombified policeman. Despite his skill in fighting, he will never seriously harm a person without a valid reason. Even after everything Dio has done, Jonathan still considers him his brother, and sheds tears for him.[8] His courteous nature as well as his mental fortitude and ability to withstand fear and pain is the main reason Speedwagon decides to aid him on his journey. During his life, Jonathan has always had an impulse to save others, beginning with Erina, and ending with his thought of a nearby baby just as he was agonizing from Dio's attack.