Death's adopted daughter, found as an orphan after her parents perished crossing the Great Nef. She has silver hair and pearly eyes, and has been sixteen years old for thirty-five years because time stands still in Death's domain. Outwardly haughty and romantic, she is deeply lonely and braver than she appears.

A tall, red-haired, freckled young man from the octarine grass country of the Ramtops, dangerously curious about the underlying logic of the universe. Clumsy and absent-minded but possessed of a stubborn honesty and unexpected courage, he becomes Death's apprentice at a hiring fair when no other master will take him.

Granddaughter of Death and daughter of his former apprentice Mort. Susan works as a governess and schoolteacher and would strongly prefer that her unusual heritage stay firmly in the past. It keeps not doing so. She has inherited a range of abilities she finds inconvenient: she can walk through walls, be invisible when she chooses, and talk to Death's horse. She is pragmatic, a little cold, very clever, and by the end of the Death sub-series has become one of the most complete characters in Discworld - someone who has genuinely come to terms with what she is.

A small skeletal rat wearing a tiny black robe and carrying a tiny scythe. When Death briefly ceased to exist during Reaper Man, the Death of Rats was created to handle the business of rat mortality. He survived Death's return and is now a semi-independent entity who mostly accompanies Susan when she is handling Death's affairs. He communicates in "SQUEAK." He rides a raven called Quoth who insists he does not want a cracker, is not going to say that, and keeps saying it anyway.

A talking raven of Ankh-Morpork who has very strong views about the literary cliche he is named for and an even stronger interest in eyeballs, who keeps company with the Death of Rats and reluctantly carries messages back and forth between Susan and the disordered Death.