James O'Callaghan, who hails from Cork, is one of the editors of US small press publisher Grayhaven Comics. He started out writing and drawing one-page strips online on IDW's Transformers Mosaics Project, before submitting a horror script to Grayhaven's The Gathering anthology. After doing a bit of creator-wrangling on their anthology Adventure, he was invited to be an editor at Grayhaven, where he is responsible for Adventure and Dark, and is co-editor of Western with Doug Hahner.