I've noticed this guy that appears in several cut scenes. He even says his name in one of them (Luiz I think it was).
- He appears in Three Leaf Clover as one of the hostages.
- He disrupts the meeting in Museum Piece.
- He is Gay Tony's bodyguard in Diamonds are a Girl's Best Friend.
The thing is, he is not just some henchman and just seems to be kind of there (he has a name, a voice actor and appears several times and doesn't really look generic, yet he is not relevant to the plot). I was thinking maybe he's part of some DLC missions where you play as him and get a different take on a mission.
Though I heard a rumour that in the DLC missions you are going to play as a biker.