BBC and FremantleMedia Enterprises to work with Davies on Aliens Vs Wizards.
Russell T Davies is making his return to children's television.
Davies has created action adventure drama Aliens vs Wizards with Phil Ford (The Sarah Jane Adventures and Doctor Who). It will be produced by BBC Cymru Wales in association with FremantleMedia Enterprises' Kids & Family Entertainment division.
FME will also manage worldwide distribution of the series (excluding the UK), as well as the brand licensing, home entertainment and other ancillary rights including publishing.
The show is due for broadcast on CBBC in autumn 2012.
"Writing for children is the biggest challenge of all and I think CBBC stands right at the heart of broadcasting," Davies explained. "So I'm delighted to launch this show, a true nationwide collaboration - a Salford commission from a BBC Wales team.
"We're joining genres too - the show's a wild, funny, thrilling and sometimes scary collision of magic and science fiction."
CBBC controller, Damian Kavanagh, who commissioned the new series, added: "This is going to be an incredible rollercoaster ride of an adventure. We believe children deserve the best and we're delighted to be working again with Russell and the talented teams at BBC Wales and FME to bring the story to life."
Davies began his career in children's TV, writing and producing dramas including Dark Season and Children's Ward, before going on to pen a host of hit adult drams such as Queer as Folk, Casanova and, of course, Doctor Who.