Michael Clarke Duncan (THE GREEN MILE) is wrapping up discussions to lend his voice to Kilowog in GREEN LANTERN, according to The Hollywood Reporter. The character is the drill sergeant for the Green Lantern Corps. He joins Ryan Reynolds, Blake Lively, Peter Sarsgaard, Mark Strong and Geoffrey Rush. Martin Campbell (CASINO ROYALE) is directing. Warner Bros. will release the film on June 17, 2011.