
Matt Dinniman is an American science fiction and fantasy writer, best known for the LitRPG series Dungeon Crawler Carl. The son of a US Army soldier, he has described himself as a military brat and moved frequently as a child; he later studied at the University of Arizona and took creative writing classes at Pima Community College in Tucson, re-enrolling in the same workshop repeatedly and crediting its group critiques as formative to his development as a writer. He published fiction through small presses for years before Dungeon Crawler Carl, including the horror novel The Grinding and the LitRPG series Dominion of Blades, while earning a living as a pet-portrait artist. After a newspaper job in Yakima, Washington, he taught himself Photoshop and sold cat and dog artwork through an Etsy store and at comic conventions, dog shows and cat shows — work he has said "didn't pay fantastic, but it paid enough." He began writing Dungeon Crawler Carl in December 2019 and serialised it free on Royal Road, where it built a large readership chapter by chapter. When the 2020 pandemic closed the shows and ended his art income, he began self-publishing the series on Amazon, with audiobooks following through Soundbooth Theater in 2021. The series follows a man named Carl and his ex-girlfriend's cat Princess Donut as they navigate a televised alien dungeon-crawl. In 2024 Dinniman sold print rights to Ace, an imprint of Penguin Random House, retaining the ebook and audiobook rights, and the series became a New York Times bestseller. He also plays bass, and has lived in Gig Harbor, Washington, since 2013.














