It’s really hard to give Cameron a true personality, as she has no feelings or emotions to react on. But even with those essential things missing, she still has a very unique behavior pattern that sets her out from the others of her kind.
First and foremost, Cameron is a machine. She is ruled by logical thought, and anything illogical is hard for her to understand on certain levels. She can understand the meanings but not the reasonings of human emotions, for example. Everything people say or do to her, though, is analyzed so that she calculates the proper thing to say in response. Also, as a machine she has no need of rest or sleep. She never sleep, only wanders around the house all night keeping watch.
The mission is the most important thing to Cameron. It is always top priority, and when they stray from the mission she doesn’t understand why. She goes along with whatever she must, though, ad helps the family with their personal side missions. But if it interferes with her ultimate objective of protecting John she won’t allow it. Sarah Connor has a personal desire never to kill anyone, but when she turns her back Cameron kills three men and says that they were a threat for knowing where they lived. However she allows Riley, John’s somewhat girlfriend, to come and go from the house assessing that she is not a threat. At least until John’s behavior becomes erratic and unpredictable and puts him in more danger. Then she is assessed as a threat and tells John to make her leave.
Outside of the main defining of a machine, Cameron has a unique ability to adapt almost. The longer she spends among the humans the more she sees and the more she learns on how to behave like them. Such as adopting the phrase ‘That’s tight’ to fit in at school, despite not always using it correctly.
This adaptation has allowed a lot of room for change in Cameron’s personality. As time goes on becomes less mechanical and more fluid in her reactions and movements to people. Almost like it’s natural to her. She has a preference in music and has no problem with picking things she likes to listen to.
Cameron has a natural curiosity of the world around her that helps lead to her adaptation. Her curiosity of the humans are what helped her develop her new catchphrase, it also lead her to dance. She was intrigued by their grace and beauty when she watched one woman dance and asked to be taught. She learned a little, but sadly allowed the woman to die once the right information was taken from her. But even Derek, John’s uncle who despises Cameron, is moved to tears when he sees her dance.
It’s unsure as to how much Cameron feels and how much she fakes. She smiles sometimes at things, and has even cried twice. One time when she cried it was unsure of whether it was a trick to kill John Connor when her chip broke, and another was during a malfunction of the chip. Losing her memory of who she was she reverted back to a learning state and even seemed to have emotions and feelings of her own.
Not only that but she seems to exhibit a sense of humor from time to time. When John claims ‘I call shotgun’ Cameron jokingly adds ‘I call 9 mm’. When questioned on the different behavioral patterns she even says ‘I fooled you’ to John. And despite not laughing, it is clear she’s trying to exhibit some form of humor in this behavior.
Cameron | Terminator: The Sarah Connor Chronicles [3/?]