I need to find a character study on the main character in Greasy Lake.
Your best bet is to use our Literature Databases. Go to our Databases by Subject LibGuide and select the Literature tab.
I searched in the GVRL: eBooks for your story, and found it in Short Stories for Students. That article does discuss characters. Try the other databases for addtional resources.
For searching tips, see our How to Use Literature Databases LibGuides.