Making her appearance in Portal 1 on the Orange Box, Chell was rarely seen or even heard from in the game itself. Making her appearance in Portal 2 she is the main protagonist once again and is seen much more often in mirrors and through her own portals though she is still silent. Throughout both games Chell must overcome tests devised by GLaDOS, Portal 1's antagonist, using only a Portal Gun that all test subjects have been given for testing.
OPENING: Having been expelled from the Enrichment Center, Chell explores the world along with her trusty Companion Cube to see what catastrophy has occurred and to search for her family. GLaDOS comes along with Chell in her potato form stating that it isn't the original GLaDOS but a duplicate that she made to monitor Chell. With Companion Cube and GLaDOS at her side Chell ventures forward toRival - Booker DeWitt
Reason - Chell who is now lost in the apocalypse comes Booker and Elizabeth walking as Elizabeth opens a tear which brings a rock into reality that Chell trips over and drops GLaDOS. Elizabeth picks up GLaDOS before Chell takes her back and GLaDOS thanks her in a mocking comment. Booker tries to tell her that Elizabeth was just trying to help and that Chell doesn't need to be rude. GLaDOS mocks Booker and Elizabeth's outfits angering them both. Booker and Elizabeth get angry and state how rude it GLaDOS tells Chell that they know where her parents are, and Chell beieving they might know something about her parents attacks Booker and Elizabeth.
CONNECTION - Chell is locked away in a testing facility much like how Elizabeth is locked away on Monument Island. Both Chell and Elizabeth are both test subjects. Chell escapes on her own, while Elizabeth requires the help of Booker DeWitt to escape. While Columbia is high up in the sky Aperture Labs is far underground. Chell and Elizabeth both open portals in a sense.
GLaDOS ends up talking to Chell at the end of the game stating how much more powerful she looks. GLaDOS continues to mock and compliment Chell informing her if she would like to know who her parents were then she would need to solve one more test. Chell having nothing more to search for silently agrees knowing she has the power to accomplish anything, though the power she possesses may be the reason GLaDOS wishes her to return.
Chell is an improvised fighter using many different pieces of technology to fight with. Her main too lin her arsenal is her famous Portal Gun which allows her to control the battlefield and escape sticky situations.
Propulsion Gel - or Slides on the Orange Propulsion Gel to do a fast strong jab. Subsequently pressing Square results in a series of jabs followed by a powerful punch. Propulsion Gel briefly stays on map and people who step on it shoot forward.
Aperture Equipment - Throw a GLaDOS potato, Companion Cube, or random Personality Core. Item stays on map, only 3 allowed at a time. Chell can pick up these items using R1 and throw them with any of the buttons.
PORTAL FUNCTION - Chell and foes can travel through Portals though Chell can close or move them at any time. Chell can throw weapons through portals such as her Edgeless Safety Cube, Companion Cube, and Propulsion Gel through portals to hit foes. If Chell shoots a portal and it hits a foe the Portal doesn't open but Chell gains a bit of AP making the Portal gun a means of range attack though it doesn't interrupt foes. The Portal Gun thus makes Chell one of the toughest competitors to get away from since she has varied melee and ranged attacks, and is hard to chase down since she can open Portals and close them at will, giving her control on how the battle will play out.
Portal Throw (Level 1) - Chell punches foe and opens a portal on the ground making it whatever color she's currently using (Gold or Blue) and throws them through it shooting them out through the other Portal. The foe dies when they hit the ground or another foe killing them both.
Animal King Turret (Level 2) - Chell opens a portal either up, down, left, or right that the Animal King Turret pops out slightly of and shoots the entire field with lasers.
SPAAAAAACCCCCEEEE!!!! (Level 3) - Chell shoots a portal at the moon that sucks everyone on the map besides Chell into space. Chell then takes over as Space Core and rams foes to kill them.
GLaDOS - Chell pulls out the GLaDOS potato to mock the foe.
Hmm...? - Chell looks around the area thinking about what to do next as if this was a test and the foe isn't there.
Little Killing Machines - Chell holds out the container with the birds pecking at the glass. Atlas and P-Body - Atlas and P-Body jump out of portals and do a high five and then portal out.
INTROS AND OUTROSEdit
Portal In - Chell walks through a Portal and enters the arena.
Infinite Loop - Chell continues to fall through one portal upwards into one downwards until she closes both landing on her feet looking around.
Out of the Rabbit Hole - Chell jumps out of the portal on the ground carrying her Companion Cube. Happy Birthday! - Chell is sitting at a table with a cake and birthday hat on and takes it off getting serious.
If Portal Out is selected - Chell opens a Portal and walks into it turning her head towards the camera as the Portal closes.
If Cake!!! is selected - Chell holds up cake to the camera.
If Hard-Core is selected - Chell holds a random Personality Core that winks at the camera.
If I <3 Companion Cube is selected - Chell hugs the Companion Cube lovingly.
If Portal Out is selected - Chell pouts and accidently opens a Portal and closes it following on her backside.
If Cake!!! is selected - Chell goes to eat her cake but GLaDOS in potato form falls in it ruining it.
If Hard-Core is selected - A random Personality Core hits Chell in the head.
If I <3 Companion Cube is selected - Chell is seem with her head and arms folded over top of her Companion Cube.
Aperture Testing Tanktop
Default Chell Costume
-Blue Tanktop - Same blue as her Portal
-Gold Tanktop - Same gold as her Portal
-Orange Tanktop - Same Orange as the Aperature Test Jacket
Aperature Testing Jacket
Chell sports an orange Aperture Jacket. Her Portals are now Light Blue and Dark Blue
-Light Blue Jacket - Same light blue as her portal with Aperture on the front in dark blue.
-Dark Blue Jacket - Same dark blue as her portal with Aperture on the front in light blue.
-Black Jacket - A black jacket with Aperture on the front in white.
Chell now looks just like P-Body. Her Portals are now Red and Yellow.
-Red Skin - Her skin is now the same red as her portal.
-Yellow Skin - Her skin is now the same yellow as her Portal.
-Animal King Skin - Her skin is now the same color as the Animal King Turret.
AtlasAtlas can be unlocked when you reach level 8 with Chell.
-Chell is one of the few characters thats costume changes turns her into a different character from her series. The other one being Kratos who turns into Deimos.