Chell

Chell is the protagonist of both Portal and Portal 2. Little is known about her past beyond her being abandoned at birth and her stubborn will to live. She wields only the Handheld Portal Device throughout her entire quest for freedom.

Portal
In Chell's first adventure, she awakens in a Relaxation Chamber, seemingly naturally. There she is introduced to GLaDOS for the first time, albeit more sane. During her first exposure to the facility, Chell is subjected to a number of tests that push her mental capacity to solve, as well as her physical body as she must to endure being shot at by the number of turrets and other hazards around the facility. During the testing,.

The player must act quick on their feet if they want to escape.

As Chell nears GLaDOS, the chambers become more dangerous with the introduction of the rocket turrets that appear, meaning certain death if a rocket hits Chell in any way.

Portal 2: Lab Rat
Portal 2: Lab Rat is a comic that follows the elusive and schizophrenic Doug Rattmann, responsible for the odd murals and scibblings on the walls of the inner parts of the facility. The comic takes place during the time after Portal and before Portal 2.

Portal 2
Portal 2 is the official continuation of Chell's story. Set in a distant future, she awakens to a rather decaying room, with the frantic sounds of someone pleading outside the room she's in.

The player finds themself back inside the testing facilities of Aperture Laboratories, where the player must navigate their way around to find a way out of the facility,