Lodovik TremaThree-Laws-free humaniform robot / protagonist
Joins the Calvinian cause, discovers he unknowingly led Daneel to their sanctuary, defends his legitimacy against Turringen, accepts Plussix's nomination, and leads Klia and Brann toward Seldon.
Rissik NumantLodovik
Linge ChenChief Commissioner / de facto galactic ruler
Reviews the Hall of Dispensation aftermath, recognizes Demerzel, negotiates a mutual-interest agreement with Daneel, and is briefly blanked by Daneel's mentalic suppression.
Chief Commissioner
Klia Asgarmentalic fugitive / courier
Young Trantorian with powerful mentalic persuasion; receives robot history from Plussix, provides Plussix with a final human acknowledgment at his death, and successfully tests her ability on Lodovik in the elevator.
R. Daneel OlivawAncient humaniform robot and secret architect
Navigates the final resolution of his twenty-thousand-year plan, negotiating with Chen, reconciling with Lodovik, engineering Hari's breakthrough, and experiencing grief at his own obsolescence.
DemerzelDaneelEternal
Farad SinterChief Commissioner of General Security / antagonist
Paranoid and ambitious; presents robot-conspiracy evidence at court, introduces General Security charges into Seldon's trial, and is routed when Prothon shuts down his warehouse operation.
Hari Seldonmentalic leader / Second Foundation organizer
Testifies at his own trial on the inevitability of the fall and the Foundation's encyclopedic mission; lies about robot knowledge; privately accepts exile to Terminus as the necessary outcome.
Wanda Seldon PalverRavenProfessor SeldonDr. Seldon
Vara LisoMentalic enforcer and antagonist
Kills Farad Sinter, incapacitates guards, and confronts Hari in the Hall of Dispensation before her death — her corpse and actions drive the post-crisis investigation.
Mors Planchfree-trader engineer / reluctant witness
Engineer who discovered Lodovik's robotic nature; wrestles with a recorder of Daneel and Lodovik's conversation and is ultimately captured by Imperial agents on Trantor.
Emperor KlayusFigurehead Emperor
Weak, excitable ruler who gleefully watches Sinter's triumph then panics when the warehouse raid collapses, revealing Sinter's lack of definitive evidence to Chen.
Major NammPalace security officer
Briefs Chen on the Hall of Dispensation events while still recovering from brain damage inflicted by Vara Liso.
Captain Tolkminor
Captain of the Spear of Glory; dying from neutrino flux, confronted by Lodovik's revelation that he is a robot.
Tritchship captain
Captain of the Arrow of Destiny; suspects Lodovik's inhuman nature, chooses to drop Planch and Lodovik at Madder Loss rather than expose herself to mutiny.
Trinminor
First mate on Planch's ship who flees when Lodovik awakens in the cargo hold.
Stettinmentalic leader / Wanda's husband
Discusses with Wanda whether Hari is deceiving them about the Second Foundation's location and their prospects of ever leaving Trantor.
Stettin Palver
BrannDahlite guard / Calvinian community member
Very large Dahlite man with a gentle manner; guards the warehouse and admits Klia as a recognized 'sister.'
PlussixCalvinian robot leader / mentor
Ancient silver Calvinian robot who educates Klia on robot history, is found dying from irreparable system failures, nominates Lodovik as his replacement, and dies after Klia's touch and words of acknowledgment.
the Blank One
Dors VenabiliRobot / Hari's deceased wife, reactivated
Presented in court as proof of the robot conspiracy; appears at the Calvinian warehouse under safe-passage to pay respects to dying Plussix, and issues a warning that she will destroy anyone who harms Hari.
Jenat KorsanSeldon's TigerTiger Woman
Yan Kansarvancient robot / diagnostician
Oldest surviving robot, originally built on Aurora; diagnoses Lodovik but fails to detect his altered programming.
KallusinCalvinian robot / organizer
Calvinian humaniform robot with limited mentalic skills; former Giskardian converted by Plussix, serves as Lodovik's guide and interlocutor.
Joanhelper
Resurrected sim of Joan of Arc, appears to Hari first in dream then via a failing tiktok in his cell, professing loyalty and hinting at a break with Voltaire.
Voltairetrickster/interior presence
No longer communicating with Lodovik after Vara Liso's mentalic blast; Lodovik reflects on his absence and wonders what Voltaire would have thought.
Gaal DornickCo-defendant
Sits with Hari in the crib of the accused; questioned briefly about robots and denies any knowledge.
Sedjar BoonDefense advocate
Hari's legal counsel during trial; advises on procedural maneuvers and relays Sinter's new indictment threat.
Boon
TurringenCalvinian robot / hard-liner
Male humaniform Calvinian who demands Lodovik's immediate destruction as a lawless abomination.
ZormaCalvinian robot / mediator
Male humaniform Calvinian who advocates against violence and identifies himself as representing an ancient pacifist faction.
ProthonImperial military Protector
Massive, cheerful commander who deploys armored troops to halt Vara's operation, extracts the warehouse location from her, and shuts down Sinter's game.
General Prothon