4. Martin Madrazo
Martin Madrazo is the ruler of the ruthless Mexican narcotic gang Madrazo Cartel, and the individual whom Michael royally irks early on in the game by accidentally pulling down part of his luxurious home. Michael pays for that particular crime with a shot to the ribs with a baseball bat - Madrazo is not to be messed with - though he later warms to the character when he pays for the damages, and becomes a mission-giver later in the story. It would be interesting to play as a gang leader again - Toni Cipriani of the Leone Family was playable in the port GTA Liberty City Stories - and this is something we'd like to see Rockstar return to. Martin is a violent and abrasive character and therefore the perfect protagonist, surely?