Claude (main character)
Catalina
Asuka
Donald Love
Salvatore Leone
8-Ball
Toni Cipriani
Luigi Goterelli
Joey Leone
Ray Machowski
Kenji Kasen
El Burro
Misty
Phil Cassidy
Jina postava (post the name to comments)
I haven't played GTA 3 thus I don't know any of these characters