Headshot Profile Image

Yvonne H. (Sen.H.H.S)

TTRPG Freelance Writer


Recent News

Cover of Pathfinder NPC Core

March 2025: All the NPCs
Always searching for the perfect statblock for that one NPC in your campaign? NPC Core has you covered with 200+ pages of statblocks from level -1 to 19, to be used directly or as inspiration!
P.S. Check out the gunwitch while you're at it. You're welcome.

Upcoming Publications

...and more upcoming!

Top Picks


About

Yvonne, pen name Sen.H.H.S., is a Taiwanese freelance TTRPG writer who has both self-published and written for acclaimed publishers and projects such as Paizo and Level Up. She is one of the winners of the Diana Jones Emerging Designer Program in 2023 and part of the writing team for the ENnie Award-winning Lost Omen: Tian Xia World Guide.She spent her formative years in Taiwan before going abroad to live in Singapore, China, and Canada. She has a BMLSc degree from the University of British Columbia. She is also an alumni of the Writer Studio program at Simon Fraser University, where she studied speculative fiction under Hiromi Goto.Yvonne currently lives in New Taipei City with her loving parents. You can follow her on Bluesky @senhhs.bsky.social for her latest activities.A list of projects she has participated in may be found under portfolio.For business inquiries, see contact.

Media

Interviews
Known Direction, Presenting, Freelancer interview: Podcast / Youtube
Gen Con, TableTakes, DJA Emerging Designer Winner Interview: Youtube
Paizo, Paizo Live, Season of Ghost AP Promotion: Twitch VOD


Publications

Upcoming
Starfinder 2nd Edition Galaxy Guide
Pathfinder Lost Omens: Shining Kingdoms
And more unannounced projects...

2025

TitleRole/ContentPublisher
Pathfinder NPC CorePolitical upstart, gunwitch, high roller, peerless duelist, retired adjustment, gunwitch weaponsPaizo Inc.
Battlezoo Dragons: Battle DragonsWriterRoll For Combat

2024

TitleRole/ContentPublisher
Wayfinder #22Millet of ErastilPaizo Fans United
Lost Omens: Tian Xia World GuideHistory, [Redacted]Paizo Inc.
Pathfinder Infinite: Feat +Contributing WriterTeam+
Pathfinder AP #203: Shepherd of DecayMisc. toolbox itemsPaizo Inc.
Iconic Encouters: Tidying UpFlash FictionPaizo Inc.
Lost Omens: Tian Xia Character GuideYaoguai, Five Breath Vanguard, misc. itemsPaizo Inc.
Pathfinder AP #206: Bring the House DownCover AuthorPaizo Inc.

2023

TitleRole/ContentPublisher
Pathfinder Treasure VaultFulusPaizo Inc.
Pathfinder Lost Omens FirebrandsRelationships, Jin LiPaizo Inc.
Starfinder Port of CallsAccord Ports, Quinsetti (NPC), Auevi (NPC)Paizo Inc.
Pathfinder Lost Omens HighhelmFolgritPaizo Inc.
Pathfinder Rage of ElementsCultural Consultant, Cover AuthorPaizo Inc.
Pathfinder Society Year 5 Intro: Year of Unfettered ExplorationScenario WriterPaizo Inc.
Battlezoo Bestiary (5E)ContributorRoll For Combat
Pathfinder AP #196: The Summer that Never WasCover AuthorPaizo Inc.

2022

TitleRole/ContentPublisher
Pathfinder Dark ArchiveMindscape Adventure (1st half)Paizo Inc.
Pathfinder Book of the DeadGhosts, some itemsPaizo Inc.
SF Galactic MagicThe Cycle, SangposhtiPaizo Inc.
Level Up: Memories of HoldenshireDesignerEN Publishing
SF Drift CrisisPre-Crisis DriftPaizo Inc.
Remarkable GuildsContributing WriterLoresmyth
PF Bounty #21: Against the UnlivingBounty WriterPaizo Inc.

2021

TitleRole/ContentPublisher
Sol Survivor: Print EditionShort StoryW.H. Arthur
Vice and VirtueRandomized TablesDungeons on a Dime
In*die Zine Mar 2021Supplement SongIn*die Zine
Pathfinder Bestiary 3Imperial Dragons, Guardian BeastsPaizo Inc.
CoM: Atlantis DividedLore and ArchetypeRealmwarp Media
Dreams of Nu-waAdventure, Art, LayoutSelf-published
In*die Zine Jun IssueSupplement SongIn*die Zine
A Clash of LightningMini-encounterDagonzo
PF AP #167: Ready? Fight!Goka Gazetteer, Sensitivitiy ReadingPaizo Inc.
Breaking Out a DrowMini-encounterDagonzo
Secrets of MagicFuluPaizo Inc.
Level Up: Adventurer's GuideLead DesignerEN Publishing
Level Up: Monstrous MenagerieLore WriterEN Publishing
LO: The Grand BazaarUrban Garden JewelersPaizo Inc.
PF Guns and GearsTian Xia and Vudra: Birth of Black PowderPaizo Inc.
This Night and ThenScenario WriterUnnamed Game Company
Monster of MythsKaijusPaizo Inc.

Before 2020

YearTitleEntryPublisherProduct Link
2020Weaver's AlmanacAppendix SongDee PennywayWebsite
-Arium FlashAdventure SeedAdept IcarusKickstarter
-In*die Zine Sep 2020Supplement SongIn*die ZineItch.io
2019Land of Pan-guSelf-publishedItch.io 
2015Emerge 15The Writer StudioAmazon 


Contact

Available for:
Worldbuilding and Lore Creation
TTRPG Design and Writing
Cultural Sensitivity Consultation and Reading
Writing samples available upon request

Please include "Business Inquiry" in subject line.
Email: yvonnehsiao925 @ gmail.com