The 47-year-old 'Doctor Who' star said that he wants to tackle a comic featuring his character Merlyn with his sister, Carole Barrowman, reported Digital Spy.
The pair have been attempting to meet with DC Comics chief creative officer Geoff Johns and Arrow showrunners Marc Guggenheim and Andrew Kreisberg to pitch the project.
"I would love to do a Merlyn comic written by myself, who plays Merlyn. I think that would be totally awesome because I know this man inside out. There's another idea I have, too," he said.
The Barrowman siblings have collaborated before on writing projects - including John's memoir 'Anything Goes', and a 'Torchwood' comic and novel.