According to Variety, McGowan will appear as "an evil half-human/half-witch" opposite Jason Momoa's Conan. Rounding out the cast are Rachel Nichols, Stephen Lang, Bob Sapp, Leo Howard, Ron Perlman and Said Taghmaoui.
McGowan is perhaps best known for her roles in "Scream", "Planet Terror" and "Charmed."
Back in 2008, McGowan was signed to star in "Red Sonja" — another creation of Robert E. Howard that was re-envisioned as a contemporary of Conan's during the '70s by Roy Thomas and Barry Windsor-Smith.
"Red Sonja" director Douglas Aarniokoski even hinted that Conan could potentially make a cameo appearance in the film. However, more recent reports indicated that "Red Sonja" was delayed until after "Conan" was finished filming.
"To clarify press reports: 'Red Sonja' is delayed," wrote McGowan last August. "I pulled out of doing it in '09. Not permanently. Hopefully [it] will follow 'Conan.'"
"I am still contracted to do 'Red Sonja,'" added McGowan. "Hopefully Filming in '10 not '09."
It is currently unclear if McGowan's role in the "Conan" film will interfere with the production of "Red Sonja."
"Conan" is set to storm theaters in 2011.
What do you think about seeing McGowan in the "Conan" movie? Should the producers have used her as Red Sonja in the movie instead of a witch? Swear to Crom and let us know what you're thinking in the comment section below or on Twitter!