Begbie is a fictional character from the novel "Trainspotting," written by Irvine Welsh. He is known for his violent and aggressive behavior, often serving as a source of intimidation among his peers. Begbie is characterized by his short temper and a penchant for bar fights, making him a memorable figure in the story. In the film adaptation of "Trainspotting," directed by Danny Boyle, Begbie is portrayed by actor Robert Carlyle. His role highlights the darker aspects of addiction and the impact of a chaotic lifestyle on relationships. Despite his menacing nature, Begbie's character adds depth to the narrative, illustrating the struggles faced by those in the Edinburgh drug scene.