Lucian Gregory

Lucian Gregory, an anarchist and a poet. He hopes to be elected as Thursday on the Central Anarchist Council but is disappointed. In the long run, he turns out to be the only intellectual anarchist.

Sunday

Sunday, the chairman of the Central Anarchist Council. He turns out to be a wealthy Scotland Yard official in charge of efforts to unearth anarchists. He gives a party on his estate and turns up dressed as a symbol of the Christian Sabbath.

Gabriel Syme

Gabriel Syme, a poet who believes in order. Gregory takes him to the meeting of the Central Anarchist Council. Though he is a police spy, Syme is elected to be Thursday, the post his friend wanted.

The Marquis de St. Eustache

The Marquis de St. Eustache, a dapper man who is Wednesday on the Central Anarchist Council. He is sent by the anarchists to kill the czar of Russia and the president of France, but he turns out to be another police spy for Scotland Yard.

Bull

Bull, who is Saturday on the Central Anarchist Council and is also a police spy.

Gogol

Gogol, who is Tuesday on the Central Anarchist Council and is also a police spy.

Professor de Worms

Professor de Worms, who is Friday on the Central Anarchist Council. He turns out to be a young actor disguised as the professor in order to act as a spy on the anarchists for Scotland Yard.

The Secretary

The Secretary, who is Monday on the Central Anarchist Council. He also is a spy for Scotland Yard.