What are some physical characteristics of Ponyboy?
You can find out most of Ponyboy's (and all the other Greasers') physical characteristics in the first chapter of the book. Since Ponyboy is the narrator of the story, all of these physical characteristics are seen through his eyes, so you don't know if they are completely accurate or if they are what he thinks...
He describes himself as not too bad looking, but that he does not look tough -- not as tough as Paul Newman. His hair is light brown to the point that it is almost red. His eyes are greenish-gray but they are too green for his tastes because he hates guys with green eyes.
He is small for his age (14), but he has a good build.