Lily Bart is a crucial character. She is a beautiful young woman trying to navigate the upper - class society. Then there's Lawrence Selden. He is a somewhat aloof figure who has an on - again - off - again relationship with Lily. Mrs. Trenor is also important as she plays a role in Lily's social and financial affairs.
The most important character is Lily Bart. She is the focus of the story's exploration of the upper - class world. Gus Trenor is significant as he is involved in Lily's financial problems. Rosedale is also an important character. He is a nouveau riche who tries to use Lily for his own social advancement while also having some genuine feelings for her.