A Foundation scientist working on the early development of psychohistorical mathematics.

An Imperial archaeologist and scientist who becomes involved with the Foundation's early history.

A mathematician serving the Imperial Court who is skeptical of Seldon's psychohistory claims.

A young mathematician from Synnax who comes to Trantor to work with Hari Seldon.

The distant ruler of the declining Galactic Empire, largely ineffective in dealing with the...

A brilliant mathematician who has developed the science of psychohistory, a mathematical discipline...

Keeper of historical records in the Imperial archives, consulted during Seldon's research.

The captain of the Imperial Guard responsible for security during Seldon's appearances at court.

Various mathematicians and scientists working on the development and application of psychohistory.

Various students and junior researchers working under Seldon to develop psychohistory.

A research assistant who works closely with Hari Seldon on psychohistory calculations.

A clerk working in the vast bureaucracy of Trantor, processing records and documentation.

A librarian on Trantor who assists Gaal Dornick in accessing galactic historical records.

Administrative chief overseeing a sector of Trantor's bureaucracy.

Pilot operating air-taxis in Trantor's atmospheric transport system.

Dean at one of Trantor's universities, concerned about Seldon's controversial theories.