THE original Underbelly cast will reunite for a new series on gangland figure Tony Mokbel.

Channel 9 begins production in Melbourne on Monday on Fat Tony & Co, based on the story of Mokbel, once Australia's most wanted man.

Robert Mammone will reprise his role as Mokbel and Vince Colosimo will play Alphonse Gangitano - as they did in the original Underbelly series in 2008.

"I'm delighted to be able to continue the story that we couldn't fully tell the first time around," Mammone said.

"Portraying such an enigmatic character is always a challenge but this is one that I'm hugely looking forward to."

Added Colosimo: "To quote 'you know who', just when I thought I was out, they dragged me back in!"

Other cast members include Gyton Grantley as Carl Williams, Les Hill as Jason Moran, Madeleine West as Danielle McGuire, Simon Westaway as Mick Gatto, Gerard Kennedy as Graham Kinniburgh and Kevin Harrington as Lewis Moran.

The Screentime and Channel 9 production, covering the manhunt for Mokbel that lasted 18 months and dismantled a drug empire, will also be filmed in Greece.

It will air in 2014.