Dre'Quan Priest
More hustler than gangster. Dealt on the street to cover the bills, but the music was always the actual plan.
Dre'Quan sold on the street to make ends meet, but Rockstar's framing is clear that dealing was the means and music was the goal. He reads as a promoter and an operator rather than an enforcer.
The distinction Rockstar is drawing
Hustler and gangster get used interchangeably in a lot of crime fiction and they describe different people. A gangster wants territory and standing. A hustler wants a way out and will take whichever door opens first. Dre'Quan is written as the second, which makes him unusual in this series: most Grand Theft Auto characters who deal drugs are defined by the dealing, and he is defined by what he was funding with it.
That also makes him the character most likely to be genuinely competent at something legal, which historically does not end well in a Rockstar story.
The music industry strand
He is the connective tissue between Boobie Ike's recording studio and Real Dimez, which makes him the character most likely to pull the story toward the music side of Vice City.
There is a lot of real material there to draw on. Florida has been a centre of American rap since the eighties, and the relationship between the money, the studios and the people who came up in the neighbourhoods the music is about has never been simple. Rockstar has previously used the industry mostly for radio stations and jokes. A promoter as a named character with a story attached suggests it wants to be inside it this time.
What is not known
Whether he is a friend to the leads, a rival, or a job giver has not been shown. Rockstar has not confirmed his voice actor and has not detailed how far his career has actually got by the time the game starts.