Characters in Thud!

Sam Vimes

Investigating a politically explosive murder while something he cannot name begins influencing his thoughts and behaviour.

Also in Guards! Guards!, Theatre of Cruelty, Men at Arms, Feet of Clay, Jingo, The Fifth Elephant, Night Watch, Where's My Cow?, Snuff, The Last Hero

Carrot Ironfoundersson

Navigating the dwarf-troll tensions with his characteristic directness — increasingly the moral and operational centre of the Watch.

Also in Guards! Guards!, Theatre of Cruelty, Men at Arms, Feet of Clay, Jingo, The Fifth Elephant, Night Watch, The Last Hero

Angua

Managing the investigation's werewolf angle while Vimes deals with his own internal crisis.

Also in Feet of Clay, The Fifth Elephant

A.E. Pessimal

A tiny government inspector assigned to audit the Watch — and the novel's funniest running joke, which resolves in an unexpectedly moving way.

Havelock Vetinari

The Patrician of Ankh-Morpork, who presses Vimes to solve the murder before the city's old hatreds boil over.

Also in Guards! Guards!, Men at Arms, Feet of Clay, Jingo, Sourcery, The Fifth Elephant, Night Watch, Where's My Cow?, Snuff, Moving Pictures

Fred Colon

Watch sergeant paired with Nobby Nobbs on the case of a stolen painting.

Also in Guards! Guards!, Theatre of Cruelty, Men at Arms, Feet of Clay, Jingo, The Fifth Elephant, Night Watch, Reaper Man, Raising Steam

Nobby Nobbs

Watch corporal who, with Sergeant Colon, is sent to look into a stolen painting while the larger crisis builds.

Also in Guards! Guards!, Theatre of Cruelty, Men at Arms, Feet of Clay, Jingo, The Fifth Elephant, Night Watch, Hogfather

Sally von Humpeding

Lance-Constable Salacia von Humpeding, a vampire and the newest recruit to the City Watch.

Detritus

Troll sergeant of the City Watch, caught between his loyalty to the Watch and the rising troll-dwarf tension.

Also in Men at Arms, Jingo, Night Watch, Moving Pictures, Raising Steam

Lady Sybil Ramkin

Vimes's wife, who keeps the household running while he is consumed by the investigation.

Also in Guards! Guards!