Who is doctor Robinson in the story of Tom Sawyer?
He is the doctor who goes grave robbing with Injun Joe and Muff Potter. He ends up dying when Injun Joe stabs him with Muff Potter's knife.
Tom Sawyer is the main character of the story. He is an orphan living with his Aunt Polly, his brother Sid, and his cousin Mary. Tom is quite the troublemaker in the story but deep inside him, you find out that he cares about those he loves. If you read in the Preface, it says that Tom Sawyer is actually a combination of 3 boys that he knew in his childhood.