Miuccia Miuller is another person who works for Pucci sent to get Jolyne her allies to stop interfering with his plans. she has the ability alter a person's memory.
D an G has a tragic past but Pucci got to him and he was given a stand and his mind might have ben altered. he was defeated by Foo Fighters
Kenzo is another assassin sent to kill Jolyne very skilled in martial arts he uses a combo of his martial arts with his stand which can change the luck of himself or others.
Viviano Westwood is assassin sent to kill Joylne he see things in black and white yet is killer for hire. His power is summoning meteors from the sky just wow that is some final fantasy magic power right there.
Romeo Jisso is Jolyne's ex boyfriend he worked with Dio's henchmen to frame Jolyne for murder and hired a hack lawyer to keep send her to prison so she can get murder, our heroes meet up with him and he gets a sticker on his tongue and yikes when it rips.
Gwess is Jolyne's cellmate she is first an enemy but after Jolyne knocks some sense into her she becomes her lackey she tries to get Jolyne to be more selfish but Jolyne will try to do the right thing in her own way.
Squalo and Tiziano are powerful duo and likely the first gay couple in the series hopefully in the future more LGBTQ its not confirmed but there are so many hints of the two. I hope to get LGBTQ JoJo for part 9
Ghiaccio has some serous anger problems his stand is an ice suit with freezing abilities they have awesome fight with him.
Pesci He is young guy to his group Prosclutto groums him become a killer his stand is a fishing rod it can track anyone and if it catches you it is almost impossible to get hook off.
Prosciutto release a aura that makes people age rapidly where they will die of old age and he does this to track trish he almost kills every passenger on a train to do so. he is grounded going around 400 km or at least that is what it says on google.