Typically, when you are asked to identify characters, you are being to identify their traits and roles in the story. Myrtle Wilson is Tom's mistress in the city. She is described as a robust woman, unrefined and slightly annoying. Myrtle may have loved George once, but has since realized how poor George is. (George had to rent his suit for their wedding). Myrtle seems to only like Tom for his money. George Wilson is her husband, and is completely unaware of her affair. He owns a car shop, and Tom is using the pretense of selling George is car, in order to see Myrtle more often. George is aware that something is going on with Myrtle, but doesn't know what it is. He seems to be the only naive, innocent character besides Nick.