Chell
(Credit to mooseman-draws on tumblr https://mooseman-draws.tumblr.com)
Chell is a always very determined, and she never gives up. She has dark brown hair, slate grey eyes, and deep tan skin. She has a very bad experience with Aperture Science (The underground science company in the story). She was a former test subject at Aperture and was the only who escaped. The crazy robot lady, GLaDOS, has tried to kill Chell many times. This place has hurt Chell's mental health quite a lot, and it's pretty scary for her to be back there. She usually doesn't talk much, especially to GLaDOS. Chell never wanted to give her the satisfaction of a response.
Wheatley
Wheatley is very jumpy and nervous. He makes a lot of mistakes (and I mean A LOT). He used to be an employee at Aperture, but some scientists made him into a spherical robot. They made him to try and stop GLaDOS from killing everyone the moment she was turned on, but he failed. They put him in charge of the human test subjects instead, and thats how he met Chell! A lot happened to the two of them (including him betraying her and eventually getting stuck in space, but that's not important right now...!). After some time, he got back his human body (Again, if you want to understand this more, play the games and read Blue Sky)! Anyways, He's extremely tall and skinny. He has blonde hair, blue eyes, very pale skin, and glasses.
Paisley
Paisly is a very sweet and overprotective character. She often acts like Chell's big sister in the story, and she is Amber's real older sister. Paisley has red hair, pale skin, and green eyes. She also has a ton of freckles all over her face. She wears her hair up in two bun on her head. She's always trying to protect those she loves, but she can still be naive.
Amber
Amber is Paisley's little sister. She loves hugs and is usually very animated.She has strawberry blonde hair, light green eyes, tons of freckles (like her sister!), and pale skin. She looked pretty similar to her sister. Amber is very optimistic and innocent. She has her hair half-up and half-down with two small buns on her head (She likes having two buns like her sis).
Penelope
Penelope is extremely innocent and small. She acts VERY bubbly and animated. She's basically a little kid. She has short, light brown hair with a head band tied at her head.
Zion
Zion is pretty quiet and calm. He looks pretty intimidating at first because of his height and well built body, but he's actually really sweet and kind He's also pretty smart. He has dark skin and really dark hair (even darker than Chell's hair).
GLaDOS
(Image from the game Portal 2)
GLaDOS is a giant robot who runs Aperture Science. She's pretty crazy too.