Matteo L. Cerilli (he/him) is a transmasc author and activist specializing in speculative fiction for all ages. His work features the YA horror Lockjaw (PRHC/Tundra Group, 2024); spooky middle grade Something’s Up with Arlo (Harper Collins Canada, 2025); YA fantasy noir Bad in the Blood (PRHC/Tundra Group, 2025); forthcoming YA speculative duology Fathom Fall (Bloomsbury, 2026/2027); a featured short story in Bury Your Gays: An Anthology of Tragic Queer Horror (Ghoulish Books, 2024); and poetry in Augur magazine. His activism work has included setting up gender care for trans students at York University, helping to found the Students for Queer Liberation—Tkaronto, and organizing with the No Pride in Policing Coalition.