Dwayne Johnson really will play the classic strongman Hercules onscreen. The Brett Ratner-directed Hercules action film will be co-produced by Paramount and MGM, the companies announced today. Johnson and Ratner’s names have been attached to the project since early spring. The screenplay was adapted by Ryan Condal from Radical Studios’ graphic novel Hercules: The Thracian Wars; Evan Spiliotopoulos did script revisions. Beau Flynn, Barry Levine and Ratner will produce. Peter Berg, Sarah Aubrey and Jesse Berger will executive produce. Production is scheduled to start in early 2013. Condal is repped by WME. Ratner is repped by CAA. Johnson is repped by WME and The Garcia Companies.