Jeff RICHARD (Valided 2021)

He is Vice President and Creative Director for Chaosium. He is a member of Chaosium’s Board of Directors.

He is the lead author of “the Guide to Glorantha”, “HeroQuest Glorantha”, and “the Prince of Sartar” webcomic, as well as numerous other supplements and articles. Jeff has been the creative director and editor-in-chief of all things Glorantha since 2008.
Recently chaosium to entrust the french version of runequest to deadcrow studio.

Born in California, long-term resident of Seattle, Jeff is rumored to now reside in fortified bunker somewhere deep in Berlin.
In exclusivity, Jeff will be Head Chef of Leviathan’s closing BBQ.


is an ENnie Award winning writer and editor, and is the Call of Cthulhu Line Editor at Chaosium. Mike was the co-writer of the Call of Cthulhu 7th Edition Keeper’s Rulebook and Investigator Handbook, and has developed, written, or edited every 7th Edition Call of Cthulhu book released by Chaosium.
Apart from managing the line and working with various writers, Mike’s work also includes art direction. Mike’s books include the Call of Cthulhu Starter Set box, Pulp Cthulhu, and the new edition of Masks of Nyarlathotep.
Around the turn of the millennium, Mike edited and published The Whisperer, a zine devoted to Call of Cthulhu. In the intervening period Mike set up and ran the Kult of Keepers, a group of Call of Cthulhu scenario writers and convention game runners. Mike, no stranger to the arcane workings of games companies, previously worked for Games Workshop as the Black Industries Line Manager, producing and co-writing the ENnie Award winning Warhammer 40,000 RPG Dark Heresy.


is an award-winning author. Creative, Mark has designed card games, action figure games, computer games and board games as well as writing roleplay games. His best-known works are the RPG Vampire: The Masquerade and its associated World of Darkness games, such as Werewolf: The Apocalypse, Changeling: The Dreaming and Wraith: The Oblivion.

Rein-Hagen also worked on a TV show as a co-writer and co-producer and brought to Fox TV, in the 90s, Kindred: The Embraced based on his RPG Vampire.

Nowadays, Mark is polyvalent and is working with new technologies on VR and AR games but also still works on traditional medium. As the CEO of the company Make Believe, he was one of the publishers of I Am Zombie worked on the new 5th edition of Vampire.

Mark does it all ! And he currently does it in Tbilisi, Georgia, where he lives with his wife and their three children

Sarah NEWTON (Valided 2021)

Sarah is an award-winning writer of fiction and roleplaying games, including: the ENnie and Griffie Award-winning Mindjammer, the far future transhuman novel and complete standalone roleplaying game for the Fate Core system (Modiphius Entertainment / Mindjammer Press); Monsters & Magic, the old-school fantasy roleplaying game (Modiphius Entertainment / Mindjammer Press); The Chronicles of Future Earth, the upcoming science-fantasy setting for the Fate Core RPG; Burn Shift, the post-apocalyptic setting for Fate Core (Evil Hat Productions), the ENnie Award-winning “Zero Point” campaign for Achtung! Cthulhu (Modiphius Entertainment); the “Great Game” campaign for Leagues of Adventure (Triple Ace Games); and co-author of the Legends of Anglerre, FATE-based fantasy roleplaying game.
She’s also the author of numerous short stories, and is ex-fiction editor of the BSFA Award-winning World Speculative Fiction Blog and the British Fantasy Society.
In April 2017 her latest novel “The Worm Within”, a novel for the Chronicles of Future Earth science-fantasy setting, was published by Modiphius Entertainment / Mindjammer Press. In winter 2017, her Mindjammer RPG was published in French by Studio Deadcrows. She is currently running a Kickstarter campaign to publish the English-language version of the French RPG Capharnaum – The Tales of the Dragon Marked. She lives in rural France with her legendarily patient with an out-of-tune piano and numerous farmyard animals.


Maxime Teppe is an illustrator who graduated from the Drawing and Art School Emile Cohl in Lyon. He has worked on indie video games and is currently working with an escape game business. As even a serious job is not enough for Maxime, he uses his free time to illustrate role play games.

John WICK (Valided 2021)

John Wick is Chaosium’s Creative Director for 7th Sea. Since getting his start in 1995, John has published dozens of games and won over a dozen awards. His games include Legend of the Five Rings RPG, 7th Sea, Orkworld, Houses of the Blooded and Cat: A Little Game about Little Heroes.

John was raised to the sublime degree of Master Mason, is a Discordian Double Agent, sings (but not well), still has the first dollar bill he made telling stories, uses Qabalic rituals on his birthday to help his friends walk up the Tree of Life, was a memetic assassin (it was a corgi), maintains a clutch of Monsters, saw a man cut in half while working as a breakman on the railroad, beat the Devil in a game of riddles, fell asleep in a goth club, plays drums (but not well), was healed by Harlan Ellison, met and talked to characters he created, and wrote this bio. And it’s all true.

Author, Scriptwriter and Game Designer
(Prophecy, Vermine, The Métabarons, Wakfu TCG, Elric, Conan)

Author, Scriptwriter and Game Designer, Julien Blondel has been working for the gaming and publishing industry since 1994. From his beginnings with Casus Belli, the first French roleplaying game magazine, this former DJ and radio host has quickly become one of the most prominent figures of the French RPG scene.

Well known by the players for his work on Prophecy, Vermine, Wakfu TCG or The Metabarons, adapted from Alexandro Jodorowsky’s masterpiece, Julien has worked on hundreds of supplements, scenarios and translations for Polaris, In Nomine Satanis / Magna Veritas, Shaan, Dark Earth, Nephilim, Unknown Armies or Legend of the Five Rings.

After collaborating with Universal, Asobo or HIP Interactive as scriptwriter for the video game industry, and writing for magazines such as Metal Hurlant, Les Inrockuptibles, Casus Belli, Lotus Noir or Backstab, he created Studio 1D to develop serious games and international innovation award winner projects for L’Oréal, Danone, Allianz or JP Morgan.

Renowned scriptwriter, he wrote his first comics script in 2002 and published dozens of books and series for Glénat, Delcourt, Soleil or the Humanoïdes Associés, most notably L’Épopée de Gilgamesh, Nova, Akademy, Actor’s Studio and the Elric series, acclaimed by Alan Moore, Neil Gaiman and Michael Moorcock himself as the best adaptation of his work.

Along with the new edition of Vermine, his post-apocalyptic roleplaying game, voted Game of the Year in 2005, Julien is currently working on the Totem System and various comics projects, including Vanikoro with French moviemaker Xavier Gens and the adaptation of the famous Robert E. Howard Conan story: The Hour of the Dragon.

During Leviathan, Julien Blondel will offer 2 masterclass sessions on registration for visitors (information to come)