He Who Fights with Monsters · Character
Garth Larosse
Also known as Garth
- Supporting
- First seen · Book 10 · Ch. 80
A towering, roughly nine-foot undead priest stands beneath a dark green hooded cloak. The cloak drapes over a skeletal body pieced together from the skeletons of a dozen monsters, its uneven bones forming a strange, non-humanoid silhouette. A skull peers from beneath the hood, its eye sockets holding small, glowing red lights that can flare brightly or dim as he focuses.
- Gender
- male
- First appears
- Book 10 · Ch. 80
- Books
- 2
Garth Larosse emerges in book 10 as a towering, nine-foot undead high priest of Undeath, his patchwork skeletal form cloaked in dark green and animated by glowing red eyes. By book 11 his body has become even more grotesque—six arms, four legs, and a ribcage that opens like doors to reveal beating hearts—signaling his deepening transformation into a vessel of his god’s will. Across both volumes he commands the underground clergy, directs the Avatar of Undeath, and relentlessly hunts Jason Asano, yet his authority is undercut when Boris Ket Lundi tricks him into accepting an incompatible messenger heart, planting the seeds of his eventual downfall.
Description
A towering, roughly nine-foot undead priest stands beneath a dark green hooded cloak. The cloak drapes over a skeletal body pieced together from the skeletons of a dozen monsters, its uneven bones forming a strange, non-humanoid silhouette. A skull peers from beneath the hood, its eye sockets holding small, glowing red lights that can flare brightly or dim as he focuses. A skull-faced skeletal figure with red lights in its eye sockets and a hunched, distinctly nonhuman body. He wears robes or layers of tattered, dirty cloth that conceal his unusual shape; beneath them are multiple odd protrusions.
Connections
Family & partnersFriends & mentorsRivals

Undeathconflicting source relationships
Garth begins as a devout high priest receiving direct commands; by book 11 he channels the god’s power through the avatar and believes he can return it, deepening his role as both servant and executor of divine will.
- J
Jameelaconflicting source relationships
Jameela remains Garth’s trusted intelligence officer and strategic advisor; her role expands in book 11 to include prisoner interrogation and battlefield counsel, solidifying her position as his most reliable subordinate.
- J
Jefffellow priest and subordinate
Jeff serves as an eccentric but tolerated subordinate priest; Garth’s exasperation with him persists, yet he keeps Jeff within the clergy for his utility.
- AO
Avatar of Undeathhigh priest and delegated commander
Garth is delegated full command over the avatar in book 11, directing its movements and recalling it when threats arise, positioning him as the avatar’s field marshal.

Jason Asanoconflicting source relationships
Initially opposing leaders in book 10, their conflict escalates in book 11 as Garth’s army and avatar become the primary targets of Jason’s coalition, cementing a personal and ideological enmity.
- BK
Boris Ket Lundideceiver and intended avenger
Initially an unseen manipulator, Boris becomes Garth’s direct nemesis in book 11 by engineering the messenger-heart trap, prompting Garth to vow personal revenge.
- J
Jettacaptor and undead puppet
After killing Jetta, Garth reanimates her corpse as a puppet to track Korinne, transforming a fallen adversary into a tool of terror.
- KP
Korinne Pescospursuer and victim
Garth actively hunts Korinne through the crystal canyon using undead puppets, turning their first encounter into a deadly cat-and-mouse pursuit.
- MD
Mahk Den Kahlaopposing faction leaders
Mahk aligns with Boris and the anti-Undeath coalition, establishing an indirect but strategic enmity with Garth’s forces.
- P
Polixcaptor and undead puppet
Similarly to Jetta, Polix is slain and puppeted by Garth, extending his use of reanimated enemies as hunting instruments.
Story so far
BOOK 10He Who Fights with Monsters 10: A LitRPG Adventure
- Garth is introduced as the towering high priest of Undeath, leading the underground clergy.
- He receives direct orders from Undeath to create and control an avatar.
- He clashes with Jason Asano, who vows to dismantle his forces.
- He manages subordinates Jameela and Jeff while planning the assault.
BOOK 11He Who Fights with Monsters 11: A LitRPG Adventure
- Garth’s body mutates further into a six-armed, four-legged monstrosity with multiple beating hearts.
- He commands the Avatar of Undeath through a subordinate priest and later recalls it.
- Boris Ket Lundi tricks him into accepting a messenger heart that cannot be removed, setting a trap.
- He animates slain adventurers (Jetta, Polix) as puppets to hunt Korinne Pescos.
- He leads the priesthood’s efforts to exploit newly freed messengers for Undeath’s cause.
Appearances
Meet Garth Larosse in Bookworm
Meet Garth Larosse in your EPUB — spoiler-safe to the book you're on.

