Arrogance is another fine trait Tom has as he shows this multiple times throughout the novel, one being his quote ,"I suppose the latest thing is to sit back and let Mr. Nobody from Nowhere make love to your wife. Well, if that's the idea you can count me out ...Nowadays people begin by sneering at family life and family institutions, and next they'll throw everything overboard and have intermarriage between black and white." Although racism was very present during the 1920's, this quote shows the simple-minded and arrogant way Tom handles his morals.
Jordan Baker- Jordan is a famous golfer who belongs to the upper class portion of society. Similar to Tom, Jordan is a cheater, at life and at golf. According to Nick ,"Jordan Baker instinctively avoided clever, shrewd men, and now I saw that this was because she felt safer on a plane where any divergence from a code would be thought impossible. She was incurably dishonest. She wasn't able to endure being at a disadvantage and, given this unwillingness" Along with dishonesty, Jordan possesses the common trait of carelessness that many characters in the novel undergo.  A quote that shows Jordan's carelessness is represented in the conversation held by Nick and Jordan about her careless behavior, and she responded with ,"Well, other people are,' she said lightly. 'They'll keep out of my way,' she insisted. 'It takes two to make an accident."  This shows the reckless behavior her and many other people of the era possessed. The extent to how little she cares is shown by how she doesn't even mind how her reckless behavior affects others. 
 Finally Jordan is hypocritical. Throughout the novel, Jordan critiques others on their reckless behavior and "hates careless people", when herself is careless and reckless.
Myrtle Wilson- Myrtle is Tom's mistress who lives in the Valley of Ashes. She is Myrtle attempts to escape her social position by becoming a mistress to the wealthy Tom Buchanan, who rents her an apartment where Myrtle can act as if she lived an upper class lifestyle; dressing up, throwing parties, expressing disgust for servants, etc.       Myrtle is foolish because she believes that Tom truly loves her, despite the fact that he won't leave his wife for her and tells her that is because his wife doesn't believe in divorce (when she isn't even Catholic).
 Another character trait that Myrtle has is she is snobby. A quote that resembles this trait well is ,"I told that boy about the ice.' Myrtle raised her eyebrows in despair at the shiftlessness of the lower orders. 'These people! You have to keep after them all the time." This shows the snobby attitude Myrtle maintains in order to impress the wealthy and sound fancier.
  Finally, Myrtle is short tempered. This is shown when she gets in a fight with George and tells him ,"Beat me!' he heard her cry. 'Throw me down and beat me, you dirty little coward!" Myrtle is known throughout the novel to be quite obnoxious and have a loud mouth, and is constantly seems to be tempting everyone into fighting her (such as when she chanted Daisy's name at Tom).
George Wilson- George Wilson is Myrtle's lower class passive husband, who deserved better. George is a shy and bland man, quite the opposite of his wife Myrtle who is very outspoken. Traits that describe George are submissive, faithful, and hard-working.
  George shows all these traits throughout the novel, although his presence in the novel is short and simple, and seems to be one of the best built characters, moral wise.  George shows his submissive and shy side through Nick's point of view. The book states ,"Generally he was one of these worn-out men: when he wasn't working he sat on a chair in the doorway and stared at the people and the cars that passed along the road. When any one spoke to him he invariably laughed in an agreeable, colorless way. He was his wife's man and not his own."
 George shows his faithful side to his wife and God in the novel. He tells Myrtle that she "can't fool God," that "God sees everything"  This shows that unlike the rich careless classes, the lower classes can't retreat into money for comfort. He returns his faith to his wife by killing who he believed murdered her in a drive-by, when in reality it was Daisy.
 George is hard-working in the sense that he has his own car garage business and is consistently working to create little profit.
Meyer Wolfsheim- Meyer is a mysterious, shady, and a corrupt business associate and friend with Gatsby. Although we don't know much about Wolfsheim- other than he's really creepy and wears human teeth on his clothes- he does often expose other characters. He is mysterious because he reveals not much about himself and his 1920's gangster lifestyle, but he does say that ,"Gatsby’s very careful around women. He would never so much as look at a friend’s wife." Which shows how Gatsby already feels "married" to Daisy, despite her being actually married. 
  He is shady because he did not attend Gatsby's funeral, but did send a letter for sentimental purposes. The letter said ,"Let us learn to show our friendship for a man when he is alive and not after he is dead… After that, my own rule is to let everything alone."  This highlights his mysterious and shady traits that restricted him from attending the funeral.
 Finally, Wolfsheim is corrupt. We know this because of his past with gangster mobs, corrupt business, and his meddling with the world series. He represents the scarier, dark, and mysterious side of New York and the new era.