Mackenzie Rio Davis (born April 1, 1987) is a Canadian actress, producer, and model. She's known for her TV roles as Cameron Howe on AMC's Halt and Catch Fire, and Kristen Raymonde on the miniseries Station Eleven, this latter role earned her a Critics' Choice Super Award for Best Actress in a Science Fiction/Fantasy Series. She's also known for her film roles as Grace Harper in Terminator: Dark Fate, the title character in Tully, Mariette in Blade Runner 2049, Mindy Park in The Martian, Chelsea in That Awkward Moment, and Nicole in What If (original title: The F Word), for this last role she was nominated for the Canadian Screen Award for Best Supporting Actress.