Tamarack: Runic-stone wizard rescued from the Gate of Sethis. He cannot remember his name until the Harbingers enter the Beklar portal, when he calls after Brill and identifies himself.
Simply: Name improvised by the party for the Twilight Temple's spectral librarian. Created by the Vey, she contains ancient records but cannot disclose information that has been redacted from her.
Helena: Gives Sethis the radiance stored in her vial and the party's accumulated light, restoring her companions' limbs and transforming the temple into a bastion.
Brill: Arrives during the guardian battle, compels Tamarack to return, helps protect him, and joins the reconnaissance party entering the mainland portal.
Ned Flanderis: Paladin who returns from the shore camp to aid the wounded but finds himself disconnected from Azran within the Twilight Temple.
Zandra: Establishes the temple as a base of operations and authorizes a smaller party to scout the portal destination before committing the full expedition.
Aronin: Destroyed a crucial mechanism before falling unconscious, is rescued by Whisper, and later accompanies the Harbingers through the Beklar portal.
Th'Marck: Joins the mainland expedition after spending the night within the Twilight Temple.
Rue: Darkling identified by Simply as a byproduct of ancient recasting. He rejects her demand that such an abomination be destroyed and accompanies Torrin to the mainland.
Sethis: Goddess of twilight and giver of death. Simply claims the true gods destroyed Sethis, after which her followers were banished and forced to survive the Starving Darkness.
Eth: Modern goddess of new beginnings and renewal, understood by contemporary worshippers as the newest incarnation or reimagining of Sethis.
Azran: Divine being identified by Simply as a lord of light born from the Ithelion. His power cannot reach Zandra or Ned within this region of Tyve.
Ithelion: Manifest light whose removal or corruption has shaped Tyve. Its distant radiance becomes visible when the party finally reaches the mainland.
The True Gods: Unidentified divine powers said to have destroyed Sethis for bringing death into a deathless land. Simply's record of their identities is redacted.
The Black Worm: Dream entity still able to reach Ilk inside the temple despite the loss of other divine and magical connections.
Harbingers of Light: Defeat the temple guardians, sacrifice their accumulated light, establish the Twilight Temple as a base, and become the first members of the expedition to reach mainland Tyve.
The Vey: Ancient creators of Simply and the portal network. Information explaining their history, artifacts, and relationship to the temple has been forcibly removed from the librarian.
Followers of Sethis: Exiles who survived the Starving Darkness by embracing opposing transformations: surrendering light to become lightless or surrendering darkness to become immortal beacons.
Dread Stalkers: Pirate crew who unload the Maelstrodomus and begin occupying, securing, and exploring the Twilight Temple and its island.
Mitharans: Vyr's people, represented in the temple by the protective cloak left by an unknown visitor decades earlier.
Gargoyle Mechanicoids: Six stone-and-metal guardians awakened by the failed lever puzzle. They channel lightning through their attacks and resist ordinary weapons.
Starving Darkness: Hungry shadows closest to the Ithelion that pursue and consume light, driving Sethis's banished followers toward recasting.
Tamarack's Conjured Mice: Swarm accidentally released from a runic stone during the guardian battle. They remain inside the temple after the spell ends.
Mainland Shadows: Darkness within the arriving travelers that stirs with hunger beneath the nearby radiance of the Ithelion.
Sethis's Lantern: Stone lantern holding a shard that alternates between pure and dark glint. It accepts light or darkness as power for the temple's sealed chambers.
Helena's Vial: Vessel containing fallen Ithelion light. Its radiance is surrendered to Sethis's lantern during the restoration of the temple.
Living Map of Tyve: Real-time cartographic globe showing weather, flooding, and active portal destinations across Tyve.
Beklar Rune: Portal rune recovered from the map chamber. It identifies and activates the route leading to a ruined temple upon the mainland.
Runic Stone Bag: Tamarack's collection of single-use magical stones, each producing a different and sometimes unpredictable spell.
Recasting Slabs: Stone beds positioned beneath glints in the temple's lower chamber, apparently used to remove light or darkness from a subject.
Temple Portal Network: Veyan archways whose destination runes can be installed in the Gate of Sethis and tracked upon the living map.
Light Sacrifice: Helena surrenders the vial's radiance and the Harbingers' accumulated light, losing their existing light boons but gaining restoration and access to the temple.
Restorative Boon: Sethis uses the offered light to regrow Normandy's and Whisper's arms because the party is not whole. The sacrifice might otherwise have granted a resurrection.
Temple Alignment: Fourteen sealed chambers respond to light or darkness as magical currency, with seven rooms associated with each path.
Recasting: Ancient process that removes either light or darkness. Removing light creates beings hidden from the Starving Darkness, while removing darkness creates immortal guardians of truth.
Redacted Knowledge: Magical or deliberate erasure preventing Simply from discussing the Vey, the Death's Kiss, Th'Marck, and other forbidden subjects.
Divine Severance: Condition within Tyve that blocks Azran's light and the prayers sustaining his followers, but does not prevent Ilk from reaching the Black Worm through dreams.
Twilight Temple: Restored lower complex beneath the Gate of Sethis. Its lantern, library, map, portal system, and sealed chambers transform it into the expedition's new base.
Library of Knowledge: Archive mediated by Simply. Its books appear blank because their contents have been assimilated into the spectral librarian.
Living Cartography Chamber: Room containing the map of Tyve and portable destination runes for the temple's portal arch.
Eye of Sethis: Tower chamber above the temple, reachable only through an inactive lift apparently connected to the lower crystal.
Recasting Chamber: Hidden lower room containing glint-topped slabs and adjacent prison cells that were used in the temple's ancient transformations.
Ilk's Worm Chamber: Candlelit room discovered behind a concealed wall, selected by Ilk for communion with the Black Worm.
Beklar: Name written upon the rune that carries the Harbingers to a ruined temple high above mainland Tyve.
Mainland Tyve: Interior land finally reached after twenty-eight episodes, visible as mountains, valleys, crags, and a distant glaciated plateau beneath the Ithelion.
Deathless Tyve: Simply remembers an age when death did not exist in Tyve until Sethis returned with mortality as a sacred and disruptive gift.
Destruction of Sethis: The true gods destroyed Sethis because she embodied death in a deathless land, then banished her followers from inner Tyve.
Origin of the Lightless: Some exiled followers removed their own light to escape the Starving Darkness, becoming the ancestors or precursors of beings like Rue.
Immortal Beacons: Other followers removed their darkness and remained within Sethis's temples as undying protectors of truth and knowledge.
Azran's Origin: Simply identifies Azran as a lord of light born from the Ithelion, contradicting the party's understanding of his present separation from it.
Veyan Portal Gifts: Simply describes the portal network as a creation of the Vey, though the details of their role have been removed from her memory.
Temple Founding: The Twilight Temple is said to stand where Sethis returned to the mainland, making it one of the central sites of her ancient faith.