|“||Who the hell am I?||”|
Josuke is a young man afflicted with retrograde amnesia, lacking any memories prior to being discovered by Yasuho Hirose near the Wall Eyes in Morioh Town. Josuke's original identity, and the one he currently identifies as, was that of Josefumi Kujo (空条 仗世文 Kūjō Josefumi?). Josuke became his current self after fusing with the man Yoshikage Kira (吉良 吉影 Kira Yoshikage?).
Josuke is a young, handsome and physically fit man of above-average height.
He wears a tasseled "Dixie cup" sailor cap (in multiple illustrations, it is adorned with the same palm as Jotaro Kujo's hat). He wears a sailor suit, cut with a wide neck and above the navel, a neckerchief with a button resembling a slotted screw head, large emblems of an anchor on his right side and a compass rose on his left, fitted pants with a belt, and a pair of high-top athletic shoes.
Josuke has a diastema between his upper incisors and a star-shaped birthmark on his left shoulder. He has two sets of irises, four testicles and two tongues, all joined as one, differing in texture and color.
Yasuho mentions he resembles her dog, Josuke.