A trailer appeared online recently for Guillermo del Toro's next movie, Pacific Rim, and it featured the voice of GLaDOS from Portal. Del Toro confirmed in an interview with the Toronto Sun that GLaDOS' appearance is Valve approved.

Del Toro said that he is a big fan of the Portal series and sought out the character's voice actor, Ellen McLain, to appear in the film. He approached Valve about throwing in the nod to GLaDOS, and everyone was on board. He also said that in the final film the GLaDOS-ness of McLain's voice will be scaled back. "The filter we’re using is slightly less GLaDOS. Slightly. The one in the trailer I wanted to be full-on GlaDOS," said Del Toro.