As exposition, Ponyboy introduces readers to several of his greaser friends. These members are: Steve Randle, Two Bit Matthews, Dallas Winston, and Johnny Cade, Briefly describe each of these characters.

To briefly describe each of these characters from "The Outsiders" by S.E. Hinton:

1. Ponyboy Curtis: The protagonist and narrator of the story. Ponyboy is a member of the greasers, a group of lower-class teenagers from the East side of town. He is intelligent, sensitive, and has a passion for reading and watching movies.

2. Steve Randle: Steve is Sodapop Curtis's best friend and a fellow greaser. He is described as being tall and lean, with a reputation for being cocky and tough. Steve is also a mechanic and takes pride in his knowledge about cars.

3. Two-Bit Matthews: Two-Bit, whose real name is Keith, is known for his sarcastic sense of humor. He often acts as the comic relief in the story. However, he is also fiercely loyal to his greaser friends and is always ready to defend them.

4. Dallas Winston: Dallas, commonly known as Dally, is the toughest and most reckless of the greasers. He has a criminal record and a reputation for being a troublemaker. Despite his tough exterior, Dallas shows moments of compassion and loyalty to his friends.

5. Johnny Cade: Johnny is Ponyboy's closest friend and the smallest of the greasers. He comes from an abusive household and is often the target of the Socs, the rival gang of the greasers. Johnny is sensitive and deeply affected by the violence in his life.

To find more detailed descriptions of these characters, you can read "The Outsiders" or search for character analyses online.