It has a few sample characters (The Champions and some foes). A helpful part of the book is chapter 5, as it has sample templates with power sets and complications for a variety of super-types such as brick, blaster, metamorph, etc. It talks about superhero campaigning in general and gives guidelines for playing in the different comic book "ages", i.e. golden, silver, etc.
Here si the table of contents if that helps at all:
Chapter One: Truth, Justice, and the American Way: The Superhero Genre
Chapter Two: With Great Power: Superhero Character Generation
Chapter Three: Comes Great Responsibility: Gamemastering Champions
Chapter Four: The Champions
Chapter Five: The Champions Sourcebook