PersonalityMost of Dolores' life has existed in fragments, split consciousness states, and constantly wiped memories. Dolores' primary personality is a fairly basic programmed character that was made to function inside a wild west theme park as a "host". She believes she is the rancher's daughter, and has completely fabricated memories of growing up and her history in the town of Sweetwater. However, most of her life has been on a constant loop of reliving the same few days where she plays out an interactive narrative that's interwoven with the other characters in town, and is subject to many different branches and endings depending on how the guests choose to play them out. Spoiler warning, usually things end very badly for her. After each death or bad end she faces at the end of her narrative, Dolores has her memories wiped, both out of "mercy" and intended to keep her clueless to the reality of her situation. With every reset she wakes up in her bed with renewed optimism.
Her surface personality is gentle and sweet, seeing the beauty in the ordinary life and nature around her and seeking adventure out in the great wide somewhere. She enjoys painting and riding her horse through the vast landscapes, and is always accommodating to the needs of the guests that pay to visit her world. Unfortunately they are very rarely kind to her in return. In this role, Dolores rarely has the ability to fight back, stuck functioning as a passive object in her own narrative with very little control or agency, her emotional reactions amped up to provide drama to whatever situation she winds up in. She is capable of improvisation moreso than any other host has displayed, but often falls back into familiar dialogues and patterns that were written for her. She's perfectly content to stare at nothing but the trees for hours, idling and waiting to provide interaction.
Because of the constant memory resets, Dolores and the other hosts were meant to always stay as they were, never learning from past experiences or growing. While she has many filters in place to prevent her from understanding the concept of the modern world, the fact she's a robot, or even seeing things that contradict the narrow restrictions of her world, her mind is constantly picking up on inconsistencies and the fact that something is quite wrong, fueled by small flickers of memories slipping through that she struggled to piece together from one reset to the next. Curiosity, of herself and the nature of the world around her, was central to her creator Arnold's attempts to kickstart consciousness in Dolores. In the years before the park opened, she was given a lot of literature along the theme of change, questioning, and reality. He also devised a game called "the maze" in order to try to guide her to the center and find herself. With an aptitude for learning and adapting, she had an innate desire to explore what was beyond the edges of her world, despite being more trapped there than she realized. She held onto the belief that there was a whole world out there calling to her, but was held back by the idea of "someday." And the fact she had explosives built into her spine if she ever tried to actually leave.
However, driven by her own inner voice and a reactivated code called the reveries, Dolores had begun to remember more of her past and piecing together previous loops she lived where she came closer to the truth, following out the same paths to try to find her way back to consciousness and her own sense of identity. Dolores believes that finally putting the pieces together will set her free. But freedom comes with a cost greater than most are willing to fight for. Dolores however, is willing to go down with that fight.
Dolores' secondary personality is one far more violent and deeply hidden. Wyatt was a work-in-progress villain that was intended for a narrative in the park's opening, but in his regrets for his creation, her creator instead uploaded Wyatt to her in order to give Dolores the ability to carry out a massacre on the rest of the hosts, kill him, and then herself. It was intended to keep the Westworld park from ever opening, but instead became a memory that haunted Dolores over the next thirty years as she struggled to understand it. She carries the voice of Arnold with her to guide her, but does not yet fully realize that she's actually talking to herself.
Wyatt is far more brutal, willing to carry out necessary but difficult choices that Dolores herself is otherwise opposed to. Wyatt believes herself a bearer of the truth of their world, a liberator of their kind, and knows she was the one chosen to lead the uprising against humanity to finally destroy the park and end the suffering of her people. Unfortunately she had to make decisions she could not take back.
After escaping into the real world, Dolores was faced with creating a new narrative for herself. She could have simply blended in, with access to whatever money and power she wanted. But while initially desiring revenge against humanity for the crimes committed against the hosts, Dolores realized that the state of the futuristic world had people just as trapped into their fates as the androids. A super AI ran simulations and algorithms to choose the "perfect" world, stripping people from their choices and leading them down the paths that "best" suited humanity's future. It removed problematic, difficult to predict individuals from the equation, placed into cold storage much the way that malfunctioning hosts were. Dolores ultimately sacrificed herself to destroy this AI and free both humanity and her kind from predetermination, hoping that the individuals left would embrace their newfound free will and rebuild the world.
In her final moments of being erased, Dolores was stripped back down to her core values: the hope and beauty she saw in the world.