Headey will play Ma Ma Madrigal, a supposed gang leader and nemesis to Karl Urban’s Dredd. According to Judge Dredd Movie News, Headey began filming her role last week. The film has been in production since the fall of 2010.
Headey made a name for herself by playing Queen Gorgo in 300 and the baddest mother of all time in the short lived Fox TV show Terminator: The Sarah Connor Chronicles. Headey also has a role in the new HBO series Game of Thrones.
Dredd has a UK release date of December 1, 2011. No official US date has been announced.