In the 'Wolf of Wall Street Novel', Jordan Belfort is the key character. He's a stockbroker who becomes extremely wealthy through unethical means. Then there's Naomi Lapaglia, Belfort's second wife. She is involved in his life of excess and also has to deal with the consequences of his actions. There's also Mark Hanna, who initially influences Belfort in the ways of Wall Street, introducing him to the wild and often immoral culture there.
The most important character is Jordan Belfort, the so - called 'Wolf of Wall Street'. He is the central figure around which the story revolves. His actions, from his rise in the financial world to his fall due to illegal activities, drive the narrative. Another important character is Donnie Azoff, Belfort's business partner. They get into all sorts of wild and unethical schemes together.
The main character is Jordan Belfort, no doubt. He's the one who builds his own financial empire on lies and greed. His personality is complex, with his charm and intelligence being used for wrongdoings. There are also his employees. They follow his lead in the corrupt brokerage firm. They are important as they show how a group of people can be influenced by a single, charismatic but unethical leader, and together they create a world of chaos and illegal activities.