Harry Potter and the Half-Blood Prince
Affiliation: Death Eater
Draco's father is a Death Eater. As a result of the big battle in the Ministry of Magic in Book 5 and as a result of failing to steal the prophecy of Harry from the Ministry of Magic, he's spending his time in Azkaban Prison. Voldemort's not too happy about the fact that Lucius was unable to steal the prophecy.