Dion is an Australian who was born in Townsville Queensland. He spent the first eight years of his life living in a caravan travelling around the eastern side of Australia, before moving to Tasmania when he was 8. He attended university in Hobart where he did a BA with majors in sociology and Aboriginal studies. He writes mainly speculative fiction in the genres of science fiction and fantasy, but also writes autobiographies. In May of 2021 he was diagnosed with viral-miocarditis and in September of 2023 he underwent a heart transplant. While the transplant was successful, the anti-rejection drugs destroyed his kidneys and he now undergoes heamodialisis three times a week. In time, he is expected to have a kidney transplant. He lives in Crookwell in the Southern Tablelands of New South Wales with his wife, dog and cat.