Mister MondayGarth NixThe Keys to the Kingdom, book 1

Characters in Mister Monday

6 characters, main characters first.

Main characters

Arthur Penhaligon
Also in Grim Tuesday, Drowned Wednesday, Sir Thursday, Lady Friday, Superior Saturday, Lord Sunday

Antagonists

Mister Monday

Supporting characters

Suzy Turquoise Blue
Also in Grim Tuesday, Drowned Wednesday
The Will
The Architect
Also in Drowned Wednesday, Sir Thursday
Sneezer