Alex
The fifteen-year-old narrator and gang leader. He is intelligent, musically sensitive, and casually brutal. His arc moves from dominance to victimhood to a genuine, self-chosen turn toward change. He is the lens through which every theme in the book operates.
Dim
The biggest and least intelligent of Alex's droogs. He resents Alex's authority from early on. By Part Three, Dim has become a police officer, which lets him legally beat Alex. His arc shows how the state absorbs and redirects violence rather than eliminating it.
Pete
The quietest droog. He disappears from the story and reappears in the final chapter, married and living an ordinary adult life. Seeing Pete settled is what triggers Alex's decision to grow up. Pete functions as a mirror showing Alex what voluntary change looks like.
F. Alexander
A political writer whose home Alex's gang invades in Part One. His wife is assaulted and later dies. In Part Three, he takes Alex in as a political prop against the government, then tries to drive Alex to suicide when he discovers who Alex is. He shows that victimhood does not make someone morally superior.
The Prison Chaplain
A minor but telling character. He warns Alex that the Ludovico Technique removes moral choice and therefore moral worth. He is the one voice in the novel who articulates the book's central argument directly, and nobody in power listens to him.
The Minister of the Interior
The government official behind the Ludovico program. He treats Alex as a publicity tool. When the program backfires publicly, he reverses the conditioning and buys Alex's silence with a job offer. He represents institutional amorality dressed up as policy.