Diamond is Unbreakable 

Its like scooby doo but in japan. and with punch ghosts

Josuke Higashikata

Stand user, Guy with cool hair

 

Has a punch ghost that can heal and has cool hair. Truly the hero we need

Koichi Hriose

Loser, showstealer

 

Pleb who needs less screen time.

Rohan Kishibe

Mangaka, Self-insert character

 

Just Araki Hirohiko

Okuyasu Nijimura

Cool guy, huge bro

 

A super cool guy who needed more screen time, his stand would be over powered if he was smart.