Vannevar MorganProtagonist / Chief Engineer
Chief Engineer of Terran Construction's Land Division, builder of the Gibraltar Bridge, now pursuing the orbital tower project; fearless at heights, driven, willing to subordinate human concerns to engineering vision.
Dr. SmithChief EngineerVanDr. Morgan
Kalidasahistorical antagonist / parallel figure
Ancient king of Taprobane who built Yakkagala and its Pleasure Gardens; ruled by isolation and paranoia; died by his own hand when his brother Malgara returned; thematic mirror for Morgan.
Johan Rajasingheconfidant / audience surrogate
Retired diplomat living near Yakkagala; hosts Morgan; uses a powerful telescope to observe the Rock; introduces Morgan's pitch to Duval and Sarath; mediates between old and new worlds.
Ambassador Rajasinghe
Maxine Duvaljournalist / helper
Celebrated journalist of Global Two; four-time Pulitzer winner; former Columbia professor; immediately grasps the tower story's magnitude; uses Remote operators (REMs) in her work.
Paul SarathMinor supporting character
Academic friend of Rajasinghe who arranged Morgan's Sri Kanda visit; skeptical but engaged; provides comic counterpoint to Morgan's earnestness.
Professor Sarath
Mahanayake TheroOpponent / Religious authority
Buddhist high monk of Sri Kanda; crowned Kalidasa and will outlast him; spiritual power Kalidasa cannot conquer; represents the religious opposition Morgan must navigate.
Venerable BodhidharmaMaha Thero
Malgarahistorical antagonist
Kalidasa's half-brother; legitimate heir who gathered foreign support for two decades and defeated Kalidasa in battle; commanded the king be given royal funeral honours.
Venerable ParakarmaOpponent / Apostate scientist-monk
Younger monk and former cosmologist who experienced a religious conversion; resolves to protect the temple while re-engaging science, descending the mountain like Moses.
Dr. Choam GoldbergSwami Krisnamurthi
Senator CollinsPolitical antagonist / TCC Chairman
Former political opponent of Morgan who attended the Tower's foundation ceremony and gave a barbed but good-humoured speech; recalled in Morgan's memory during hard-dock.
Narodny Mars Vice-PresidentActantial sender / Financier
Wheelchair-using Martian banker who proposes the Mars elevator alternative and witnesses the failed probe test; laconic but satisfied by Morgan's answers.
the Martian bankerthe man in the wheelchair
Warren KingsleyHelper / Structural engineer
Morgan's structural engineer collaborator who coordinates ground communications and battery calculations during the rescue mission.
Rem (Duval's Remote operator)Technical helper
Duval's remotely operated camera and audio unit that records events on the mountain during the probe crisis.
Changhelper
Driver-pilot of the stranded capsule who led the passenger evacuation to the Basement refuge and later assists Morgan with suit-up for track inspection.
Rupert Changdriver-pilot Chang
Professor Sessuiactantial:receiver
Scientist stranded in the Basement who resisted evacuation for his instruments and awkwardly thanks Morgan for the rescue.
Janos Bartokactantial:opponent
Tower Safety Officer at Midway Station managing the official rescue coordination, who politely rebuffs Morgan's suggestions before confirming the laser solution independently.
Safety Officer Bartok
Devminor
Morgan's teenage nephew, briefly noticed in the crowd before Morgan's departure; Morgan promises to pay more attention to him after the mission.
The Starholmerframe narrator
Alien intelligence in human form visiting Yakkagala six hundred years after Morgan's era, observing the completed Tower and posing the closing thematic question about Kalidasa's legendary claim.
ItHolmerMaster of the Swarms