Ah yes, Josuke, most likely the most interesting of the Joestars. Often cool and collected, but you best not talk trash about his hair...

Josuke is a high school first-year residing in the town of Morioh. He soon meets Jotaro Kujo, who informs him that he is Joseph Joestar's illegitimate son. After his grandfather dies, Josuke takes it upon himself to protect his beloved town from malevolent Stand users. Josuke wields Crazy Diamond, a powerful Stand with the power to repair almost anything.

We'd most likely choose the audition that best impersonates his voice from the official Dub, seen here https://www.youtube.com/watch?v=Pdxah7Bp1eY