* Jay Gatsby: Gatsby's carefully constructed world of illusion and desire crumbles in this chapter. He loses Daisy, his dream of a life with her, and ultimately his life. The tragic accident involving Myrtle Wilson, coupled with Tom's revelation to George Wilson about Gatsby's involvement, sets off a chain reaction leading to Gatsby's death.
* Daisy Buchanan: She is the ultimate catalyst of the tragedy. Though torn between Gatsby and Tom, she ultimately chooses comfort and security, effectively condemning Gatsby to his fate. While not directly responsible for Gatsby's death, she allows herself to be manipulated by Tom and ultimately contributes to his demise.
* Tom Buchanan: His arrogance and possessiveness lead to the tragedy. By revealing Gatsby's involvement with Myrtle to George Wilson, he fuels the rage that leads to Gatsby's death. Tom also demonstrates a callous disregard for the consequences of his actions, further highlighting his own personal tragedy of moral decay.
* George Wilson: He is the tragic victim of circumstance. Betrayed by his wife and manipulated by Tom, he is driven to a state of madness and revenge. His actions are the result of grief and desperation, making him a tragic figure in the overall narrative.
* Myrtle Wilson: Her pursuit of Gatsby and affair with Tom ultimately leads to her death. She represents a yearning for a better life, but her choices put her in a dangerous situation, ultimately leading to her tragic demise.
Chapter 7 is a turning point where the characters' illusions are shattered and their actions have catastrophic consequences. The theme of tragedy is woven throughout the chapter, highlighting the destructive nature of their choices and the fleeting nature of their dreams.