Clockwork PrincessCassandra ClareThe Infernal Devices, book 3

Characters in Clockwork Princess

4 characters, main characters first.

Main characters

Tessa Gray
A shape-changing warlock facing the truth about her own nature.
Also in Clockwork Angel, Clockwork Prince, Ghosts of the Shadow Market

Antagonists

Axel Mortmain
The Magister, an industrialist bent on destroying the Shadowhunter race with clockwork automatons.
Also in Clockwork Prince

Supporting characters

Will Herondale
A tormented Shadowhunter whose feelings for Tessa come to a head.
Also in Clockwork Angel, Clockwork Prince
Jem Carstairs
Will's gravely ill parabatai, engaged to Tessa.
Also in Clockwork Angel, Clockwork Prince, Ghosts of the Shadow Market