Leo has been a professional writer for over ten years, authoring four novels including 13 Days of Midnight and Phantom. He has also written for the old-school RPG scene with work like the critically-acclaimed Vaults of Vaarn setting, the ENNIE-nominated adventure module The Shrike, and the vampire crime game Bloodheist. He is currently creative lead on Scourge of the Sarafan, an upcoming Legacy of Kain TTRPG.