In the comics, Bereet is a Krylorian who used her alien technology to produce films concerning fictional adventures of herself and the Hulk.
Gunn added on his social networks:
#gotgpicoftheday Posting this one as I land in Singapore. It's @meliakreiling as Bereet and @prattprattpratt as I think you know by now. Thanks for all your kind messages about the 17 minute preview. Glad you all enjoyed it! #guardiansofthegalaxy #gotg
"Guardians of the Galaxy" has an August 1, 2014 release.
For news, images and more head on over to the Cosmic Book News Guardians of the Galaxy Movie Hub.