Chell

Intro A tenacious and stubborn woman who is a test subject for Aperture Science, testing the Aperture Science Handheld Portal Device to solve a series of increasingly challenging puzzles. She is also the (in)famous human that was able to defeat GLaDOS long ago. Chell later became allies with GLaDOS when a core named Wheatley, who had planned to escape the facility with Chell after defeating an awakened GLaDOS (whom he had accidentally awakened), betrayed Chell and sent them deep into the oldest parts of the facility, where Chell and GLaDOS worked together to defeat Wheatley in exchange for Chell’s freedom from the facility she’d been kept at for years and forced into testing by GLaDOS for many years prior to their alliance.