
Glass Immortals · Character
Thessa Foleer
Also known as Lady Foleer, Thessa woman, Nine
- Major
- First seen · Book 1 · Ch. 3
Thessa Foleer is a major character in Glass Immortals (Book 1).
- Gender
- female
- Age
- 22
- First appears
- Book 1 · Ch. 3
- Books
- 1
Description
Twenty-two-year-old woman of medium height with dirty-blond hair in a ponytail, light provincial skin, and pretty face. Arms covered in old burn scars. Wears tunic, heavy siliceer apron, and thick-soled boots.
Connections
Family & partnersFriends & mentorsRivals
- P
Paluacasual partner
Thessa and Palua have a casual sexual relationship after sharing wine and cigarettes. Thessa worries about the workplace consequences because Palua is a lower-ranking apprentice.

Demir GrappoProfessional
Demir is trying to rescue Thessa from Ivory Forest because he needs her expertise and the schematics she carried. He sees her success in recreating the phoenix channel as crucial to the Grappo family’s future.

Idrian Sepulkiold friend
They have known each other for years through Kastora and reconnect at the army camp. Idrian answers Thessa’s questions about Holikan with compassion and candor.

Adriana Grappoally
Adriana was an ally Thessa hoped might help her after escape. Thessa believes she is dead, leaving her and Axio without an obvious source of aid.
- AD
Axio DarnasusProfessional
At Grent’s glassworks, Thessa is Axio’s senior and protective authority figure. Imprisoned together at Ivory Forest, she encourages and teaches him to make godglass, covers for his inexperience, and vows they will escape together.

Baby MontegoFriend
Montego helps Thessa escape the compound and assists her in treating Demir’s injury.
- E
EkhiOther
Ekhi is Thessa’s falcon and one of the last things she has from her parents. Demir returns the injured bird to her, and she is deeply relieved to find him alive.
- GM
Glissandi Magnafellow prisoner
Glissandi, called Three, shares the prison dormitory with Thessa and reads the newspaper aloud to the other prisoners.
- MK
Master Kastoramentor
Kastora has trained and guided Thessa for years, recognizes her exceptional siliceer talent, and appoints her his principal assistant on the phoenix-channel project. He entrusts her with its schematics and the task of rebuilding it.
- P
Pariemployer
Pari saves Thessa from an attempted abduction, partly because Thessa had previously treated her kindly. Thessa hires her as a trusted assistant and offers her a chance to advance beyond her labor-camp background.
- SV
Sumala Volosintellectual influence
Thessa studies Volos’s treatise on lightning rods and bases her experimental plans on the professor’s work and descriptions of her testing location.
- TK
Tirana KirkovikProfessional
Tirana leads the enforcers protecting Thessa and the phoenix-channel project. She warns Thessa that Justaci’s fall may have been deliberate and urges her to stay alert for a traitor.
- S
Serrestravel companion
Serres gives Thessa a ride with his refugee family after she helps free their wagon. He offers her shelter, and she helps him when the soldiers seize the group.
- AD
Aelia Dorlanitarget
Aelia orders an armed Dorlani team to break into the Hyacinth, search Thessa’s room, and seize all her project work.

Breenen AlvariEnemy
At the Forge, Breenen turns his weapon on Thessa and helps the mercenaries’ collaborators seize control of the barricade.
- CF
Filur oversees Thessa’s forced labor at Ivory Forest, confiscates her schematics, and threatens punishment for failure or defiance. Thessa hides her identity and considers sabotaging the compound and escaping.
- SM
Supi Magnaintended captor
Temmen intends to sell Thessa to Supi Magna after recognizing her as a missing prisoner from the Ivory Forest Glassworks.
- CH
Captain Helloniancaptor
Hellonian holds Thessa prisoner, seeks information about the phoenix channel, and treats her with condescension. She refuses to cooperate with him and ultimately uses the unfolding crisis to resist the captors.
- T
Temmentarget of attempted abduction
Temmen recognizes Thessa as a fugitive from the Ivory Forest Glassworks and threatens her with a knife, intending to take her to Supi Magna. Pari kills him while Thessa restrains him.
Story so far
BOOK 1In the Shadow of Lightning
Key events
- Book 1
Ch. 24Rescue from Ivory Forest GlassworksDemir and Montego rescue Thessa from the labor camp after she steals the phoenix channel schematics. Craftsman Magna is killed by Thessa in the furnace. - Book 1
Ch. 25Healing of Demir GrappoThessa creates a high-resonance braided godglass device with cureglass core to heal Demir's fearglass exposure, successfully saving his life and mind. - Book 1
Ch. 55Thessa's Forgiveness of DemirThessa learns the truth about Demir's role in the Holikan campaign from Idrian and forgives him, reaffirming their business partnership despite the painful history. - Book 1
Ch. 60Battle at the ForgeThessa activates the phoenix channel during a storm at the Forge lighthouse, causing a massive explosion that affects both armies while Breenen betrays the group.
Gallery
Book 1: In the Shadow of Lightning
Appearances
Next stop
In Book 1
Places
Meet Thessa Foleer in Bookworm
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