Callan J. Mulligan
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Callan J. Mulligan

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Callan J. Mulligan is a multi-disciplinary artist and bestselling sci-fi/fantasy author. Born in 1988, he grew up in the Adelaide Hills of South Australia. Writing poetry and fiction from as young as six years old, his ambition and imagination took him through several creative careers including Graphic Design, Music, and Film & Television. By the age of 23, he was locally known for music and lyricism under the moniker "XT" - recording several albums and performing throughout South-East Queensland. At the age of 29 he wrote his first published work of fiction, the novella, A Mind of His Own. The debut work received critical acclaim and hit amazon's Top 25 Psychological Thriller list. In 2021, his short stories appeared in Australian science fiction magazines, and he published his award winning sci-fi novel, The World Settlers. The World Settlers broke into global bestselling science-fiction lists, along side titles such as James SA Corey's The Expanse, and Frank Herbert's Dune. In 2025, Callan launched a YouTube channel (@calmulliganfilms) to showcase his collection of short travel films and global documentaries. The channel has generated over 1 million views. He also shares career lessons and art tutorials on his other channel (@callancreates). Callan lives with his wife and son on The Gold Coast, Australia, where he is currently working on his first graphic novel.
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