Dan Cody

While Dan Cody is not one of the central characters, he influences Gatsby in a great deal before this story began.
Dan Cody was a copper mogul aboard a yacht. While James Gatz was fishing and digging for clams as a reprieve from janitorial work, he noticed an impending storm out in the ocean. He rowed out out to warn him, and Cody took him in now as Jay Gatsby.
While spending time with Dan Cody, Gatsby gained a lot of responisibilities. One of which was looking out for the drunk Dan Cody, which influenced him to not become a drinker.
But on an even bigger scale, Gatsby fell in love with his luxurious wealth. He became motivated to attain that himself, and set new goals for himself. I wonder if this story would even be a story without Dan Cody..?