why is glados evil in the first and sencond the n she'z nice???

[76561198119027456]

idk y?

[Lily]

Well, me and many others believe that it's basically when she's in her body, she's evil, as it's corrupted, but when she got put in a potato, she turned nice because she wasn't in her body. This is why Wheatley was evil when he got put in GLaDOS' body when he used to be nice and helpful.

[reg1s7]

My theory:
The first part is logical consequence from the first portal. In the second part, after their clash, GLaDOS hates Wheatley more than she hates Chell, to the point where she is willing to cooperate with Chell just fo fight Wheatley. On other hand, in potato body, there is nothing GLaDOS can do other than cooperate with Chell.
After their journey, GLaDOS's perspective towards Chell already changed.

[Tohchal]

because wheatley was programed to be a moron and glados doesn't want to facility to be controlled by an core that was made just to be an idiot

[76561198119027456]

Originally posted by EvanS_3826:

My theory:
The first part is logical consequence from the first portal. In the second part, after their clash, GLaDOS hates Wheatley more than she hates Chell, to the point where she is willing to cooperate with Chell just fo fight Wheatley. On other hand, in potato body, there is nothing GLaDOS can do other than cooperate with Chell.
After their journey, GLaDOS's perspective towards Chell already changed.

thank you as a little boy (i was 5 or 6 when i played this now im 11) i didn't know why she hated chell now nice to chell

[Biscuit]

I believe that when the Scientists were creating GLaDOS, she was just really violent and aggressive towards them everytime they turned her on. She killed almost every Scientist in the facility with Neurotoxin, but still has a urge to test, as she was designed to.
Wheatley did become evil upon being plugged into the facility, and it seemed like he got too greedy and wanted to remain in the body.
For some reason, in the back of my mind I remember hearing that the core being plugged in was corrupted, and became evil. This would make sense, as it still fits with the original story, but I can't say if this last part is actually true.