GLaDOS Did Appear in Pacific Rim's Trailer, but Won't Return for the Movie

When Pacific Rim's latest trailer (above) went out last month, a lot of people thought, "Wait! I know that voice!" And indeed, it sounds like Jax Teller reading from "The Life and Death of Sam Crow" as an enormous sea monster destroys a bridge. Oh yeah, GLaDOS from the Portal series can be heard as well.