
Glass Immortals · Character
Demir Grappo
Also known as Lightning Prince, Major Grappo, Master Grappo
- Major
- First seen · Book 1
Demir Grappo is a major character in Glass Immortals (Book 1).
- Gender
- male
- Age
- 20
- First appears
- Book 1
- Books
- 1
Description
A twenty-year-old human man with dark olive skin and swept-back black hair, wearing a decorated black uniform. An overlapping-triangle sorcery tattoo marks his left hand; he conceals it with a glove at times.
Connections
Family & partnersFriends & mentorsRivals

Adriana GrappoFamily
Demir is Adriana’s son and deeply shaped by her legacy. Their relationship is affectionate but complicated by her wish that he return to Ossa and resume his career; they last played Kings and Pawns shortly before her death.

Baby MontegoFamily
Montego says he is a Grappo by adoption, but their relationship is independent and neither presumes to command the other.

Tadeas Grappouncle
Tadeas is Demir’s uncle and a trusted adviser. He counsels Demir on military and political decisions and reminds him of his responsibilities, while Demir turns to him for candid strategic discussion.

Idrian SepulkiProfessional
Demir commands Idrian in the campaign and brings him along to guard against an enemy breacher. He also deliberately shows Idrian the attack to restore his confidence in Demir’s leadership.

Kissandra Vorcien-MontegoFriend
Kizzie and Demir are close friends. She investigates his mother’s murder and tries to help him, but her actions indirectly contribute to his confrontation with Capric. Father Vorcien later proposes that they marry, though Demir finds the prospect personally complicated.

Thessa FoleerProfessional
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.
- AD
Axio Darnasusrescuer
Demir sees Axio’s body during the rescue, but arrives too late to save him.

Breenen AlvariProfessional
Breenen manages the Hyacinth Hotel and handles Demir’s communications and press releases. Demir trusts him with sensitive information, and Breenen keeps him informed about the attack on the hotel and the letter concerning Capric.
- CV
Capric VorcienFriend
They were friends from childhood, shared tutors and holidays, and completed officer training together. Demir trusted Capric enough to take him on the Holikan campaign, but discovers Capric signed the order to sack the city and falsely left Demir blamed for it; their relationship becomes openly hostile.
- CJ
Colonel Jorfaxcommanding officer
Jorfax’s glassdancers serve under Demir’s military command as scouts. She confronts him about their deaths, and they cooperate on recalling scouts and planning the next battle.
- CF
Craftsman Filur MagnaProfessional
Demir uses his new sixteen-percent ownership stake to compel Filur, the glassworks overseer, to give him a tour. He bribes and pressures Filur while concealing his search for Thessa.
- FV
Father VorcienProfessional
Father Vorcien likes Demir but has helped undermine him through Capric and seeks to bind him to the Vorcien family. He offers Demir Kizzie’s hand in marriage in exchange for ending his feud with Capric and returning to command the war.
- GS
General StavriOther
Demir takes command after Stavri’s disastrous defeat and criticizes the prior leadership, while planning to outperform him against Kerite.
- H
Holikansurvivor
Demir’s memories of a burning city and Holikan’s destruction haunt him as he addresses his soldiers. Thessa tells Breenen that Demir has already explained Holikan to her and that she has forgiven him for his limited responsibility.
- MK
Master Kastoraproject sponsor
Kastora’s legacy matters to Demir’s work with Thessa; Demir funds the phoenix-channel project, which Thessa hopes will honor the work and memory of her mentor.
- M
Mikaordnance engineer
Mika develops grenades and slings that Demir incorporates into his battle plan; he relies on her engineering work to strike Kerite’s advancing forces.
- SM
Supi MagnaOther
Supi controls the Magna family’s ownership of Ivory Forest and refuses to sell shares. Demir must find another way to gain access to the glassworks and its records.
- TK
Tirana KirkovikProfessional
Demir keeps Tirana on as the hotel’s master-at-arms, valuing her independence and loyalty. He apologizes after using private information about her past to impress her.
- CW
Colonel Wessensuperior officer
Demir takes command at Fort Bryce and gives Wessen orders to repair and drill the neglected garrison. He recognizes that Wessen is ill-prepared rather than corrupt or cowardly.
- DJ
Duala Jaassformer spymaster
Duala served as Demir’s spymaster when he was provincial governor and now works as an information broker. He hires her to locate Thessa and investigate Ivory Forest.
- GK
Gregori Kirkovikmilitary ally
Gregori supports Demir’s appointment and favors his blunt, irreverent manner, while urging him to defend the capital.
- H
Halfwingartillery officer
Demir orders Halfwing to prepare the artillery battery, whose concealed cannons help spring his trap against Kerite’s cavalry.
- HK
Hammish Kirkovikchildhood friend
Hammish spent time with Demir in the woods during Demir’s childhood and encouraged Adriana to arrange proper tactical instruction for him.
- H
Harlenold friend
Demir has known Harlen since he first began betting as a boy. Harlen handles his wagers and assists him in calling in Lechauri’s debt.
- JP
Jona Prosotsidistant cousin
Jona is Demir’s distant cousin and a longtime friend of the Grappo family. He provides the use and secrecy of his glassworks after Demir is injured.
- LP
Lechauri Pergosold friend
Demir and Lechauri were friends from childhood and once wrote a play together. Demir uses Lechauri’s gambling debt to recruit him to obtain confidential Magna and Ivory Forest records.
- M
Mahrenemployer
Mahren is the Hyacinth porter on duty at the concierge’s desk. Demir asks him to identify the Cinder captain and send a conciliatory case of wine.
- MF
Myria Forlpolitical counterpart
Myria is the mayor of rebellious Holikan. Demir accepts her surrender without executing her, rejects the customary punishment of the city, and pledges its people his protection.
- SS
Sammi Stavrimilitary superior
As a member of the Inner Assembly, Sammi is among those who appoint Demir to command. She is grieving the deaths of close family members in the Foreign Legion’s assassination.
- U
Ulinagambling opponent
Demir won Ulina’s share of the glassworks in a heated gambling session; he jokes that she might later marry into the Grappo family, but neither treats that prospect as an actual relationship.
- AD
Aelia Dorlanipolitical adversary
Aelia is an enemy on the Inner Assembly and orders Dorlani operatives to steal Thessa’s project. Demir sees her as a threat to his guild-family and the phoenix-channel effort.
- DK
Devia KeriteEnemy
Kerite commands the opposing forces and is Demir’s principal battlefield opponent. He respects her as the world’s best general and devises a plan to draw her troops into a vulnerable position.
- SV
Sibrial Vorcienadversary
Sibrial attempts to intimidate and obstruct Demir during the public confrontation with Capric. Demir threatens him and is arrested alongside Capric after the duel is interrupted.
- HD
Helenna Dorlanipolitical adversary
Helenna repeatedly undermines Demir and presses him to follow punitive traditions after Holikan’s surrender. Demir regards her as a persistent political threat.
- JS
Jakeb Stavripolitical opponent
Jakeb made Assembly deals betting against Demir’s success in the campaign and stands to lose heavily after Demir’s victory.
- UM
Ulina MagnaRival
Demir manipulates Ulina’s enthusiasm for gambling into a series of escalating bets, ultimately winning her stake in the glassworks.
Story so far
BOOK 1In the Shadow of Lightning
Quotes
Love is in short supply among the guild-families, and I wish I had told you that I loved you back while you were still alive. I wish I’d forgiven you.
Book 1 · In the Shadow of Lightning “You’re a crutch,” he whispered, “and I can’t yearn for you any longer. With or without you, I am still a Grappo. I am still the Lightning Prince.”
Book 1 · In the Shadow of Lightning
Key events
- Book 1
Ch. 1Sack of HolikanDemir Grappo's army sacks Holikan under forged orders bearing his seal, resulting in thousands of civilian deaths including children. Demir resigns his command and disappears for nine years. - Book 1
Ch. 3Ossan Invasion of GrentThe Assembly votes for war against Grent in retaliation for Adriana's murder, launching an invasion within hours of the declaration. - Book 1
Ch. 8Discovery of Phoenix Channel PrototypeMaster Kastora reveals to Demir and Idrian that he and Adriana created a phoenix channel prototype capable of recharging godglass, before dying from his wounds. - 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. 34Demir's Appointment as Legion CommanderThe Inner Assembly gives Demir Grappo command of the remaining Foreign Legion forces to slow Devia Kerite's advance on Ossa. - Book 1
Ch. 39Demir's Victory at Fort AlamedaDemir uses strategic deception including a man-made lake flood and night cavalry attack to defeat Kerite's forces threatening Harbortown. - Book 1
Ch. 43Confrontation with Capric VorcienDemir publicly confronts Capric over the forged orders that caused the Holikan massacre, leading to a duel in the street before their arrest by the Cinders. - 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. 62Final Battle Against KeriteDemir defeats Kerite's mercenary forces using strategic deception and the confusion caused by the phoenix channel explosion at the Forge.
Gallery
Book 1: In the Shadow of Lightning
Appearances
Next stop
In Book 1
Places
Meet Demir Grappo in Bookworm
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