Samara

Samara is a resident in Twilight Town who mainly uses the power of Darkness rather than the Light.

Early Age
As a young child, Samara knew things that she had no way of knowing. Many children either feared and avoided her, or picked on her due to her having "demon powers". As she grew older, Samara practiced and gained control over her powers.

Kingdom Hearts 358/2 Days
During the events of Days, Samara mostly stays secluded from people and wanders around. Usually, she hangs around the woods which led her to meet [https://kingdomhearts.fandom.com/wiki/Xion Xion. ] Finding Xion to be an interesting person, Samara made sure to have conversations with Xion whenever possible.

Over time, they formed a friendship and became close friends, with Samara gaining a Thalassa Shell earing from Xion. However, Xion started becoming more distant and quiet, causing Samara to be concerned. Samara attempted to help Xion leading Xion to become more distant. Ultimately Xion stops appearing in Twilight Town. Samara then begins to focus more on the odd dreams and voices, knowing that they would provide the answers that she sought.

In the end, Samara nearly forgets Xion but holds onto the now vague memories.

Kingdom Hearts ll
In Virtual Twilight Town, Samara is merely an acquaintance to Roxas. Virtual Samara seems to know that this Twilight Town isn't real, by stating, "This town... is not what you think it is', to Roxas.