Illegitimate firstborn son of Thomas Shelby and Zelda Chiriklo, as well as being the nephew of the other Shelby siblings, and cousin of their children. Duke is also the half-brother of Charles and deceased Ruby Shelby. Despite his initial reluctance to be part of the gangster world, he eventually became a full-fledged member of the Shelby family. His leadership made the new generation Peaky Blinders as violent as they were in his father’s leadership. 