Who is Professor Rudolph Perini from One L: The Turbulent True Story of a First Year at Harvard Law School and what is their importance?

Professor Rudolph Perini is the instructor for Scott's section's Contracts class. Perini's expressionless and unapproachable demeanor both confuses and frightens the students, a fact that seems to delight Perini. Perini explains at the onset that he is not an easy person and that he does not tolerate students being unprepared in his class. Perini is a staunch supporter of the Socratic method of instruction which involves random interrogation of students who are grilled mercilessly by Perini.