The patient and composed Mayor of Terminus City, who prevents invasions and sets the tone for future Foundation leaders. He is known for nonviolent conflict resolution.

A guild trader who uses negotiation and intelligence to solve problems and supports the Foundation without seeking political power. He represents the shift from other power forms to economic influence.

A guild trader and later Mayor of Terminus, known for his patience and strategic thinking in avoiding war with Korell. He promotes cultural diversity and aligns with the Foundation's Plan.

A young mathematician who joins Seldon's Foundation project and serves as a narrative gateway. His observations introduce readers to the setting and Seldon's plans.

Chairman of the Foundation’s Board of Trustees, dedicated to the Encyclopedia Galactica. He opposes Mayor Hardin and struggles with political decisions.

A superficially scholarly and politically clever visitor who discusses military threats with the Foundation. He epitomizes the declining culture and ineffective political strategies of the Empire.

A Terminus City Councilman who opposes Mayor Hardin's diplomatic policies and advocates for military action. He represents the more aggressive political perspectives.

The ambitious Prince Regent of Anacreon, who seeks to expand power through conquest. He poses a significant threat to the Foundation.

The young heir of Anacreon, under his uncle Wienis’s influence. He must balance his immaturity with his responsibilities as future king.

A fervent Foundation leader who believes in the institution’s technological religion and opposes Mayor Mallow’s diplomatic approach.