Elias

As the king regnant of the kingdom of Arendelle, Elias appears calm, reserved, regal and - unlike his brother - graceful and poised. Beneath this cool and collected appearance, however, Elias is quite turbulent; in truth, the ice king was, for a majority of his young life, troubled by his abilities, a feeling which stems from a traumatic incident as a child. When he was younger, he had cared strongly for Aaron and, despite being the more mature and cautious of the two brothers, he was still quite playful and used his magic to have fun and goof off.

However, after witnessing his magic cause his brother harm, Elias lived in fear and trauma for a great amount of his life as he became too terrified to let his powers overdevelop. he consequently chose isolation from everyone he cared for, including Aaron, out of the presumption that his isolation would protect them from her power. This would eventually result in years of loneliness, misery, and grief. Regret would gradually take its toll on him when tragedies struck throughout his life, from the accident with his brother to the death of his parents, leaving them both to mourn and grieve alone.

Elias's damaging experience through the crucial stages from childhood to adulthood caused his personality to shift. he became reclusive, insecure, emotionally unstable, anxious, and depressed. For Elias, his powers and nature grew more restrained as the years passed, slowly molding him into the cold-hearted king others saw him to be. However, when given a chance to rest and relent, Elias's true, warm, kind, fun-loving, and innocently mischievous personality came about - but only briefly and with restriction, as seen on the night of his coronation.

Elias also has a generous disposition that contributes to his compassion towards his people. Throughout the film's entirety, the ice king's actions are driven by the desire to protect his kingdom, and more intimately, Aaron. Unfortunately, that comes with a price, as Elias's upbringing would lead him to believe that, for the safety of his loved ones and for the sake of remaining true to who he is as a gifted person, he is a living disaster that must be removed from society. Even with Aaron's persistence to help end the curse, Elias's method of solving the problem - enforced isolation - would remain prevalent. His determination to solve his problems through singularity is Elias's greatest flaw, driven by his anxiety and traumatic childhood experiences.

Though a benevolent and giving person, Elsa suffers from emotional instability due to years of keeping her emotions bottled up. When her strong emotions are triggered, Elsa often loses control over her emotions which can create dangerous situations for herself and others around her. An example of this is when Anna informed her that she had unknowingly plunged Arendelle into an "eternal winter", she began panicking as she realized she had brought harm upon her kingdom, which made her lose control of both her emotions and powers, resulting in ice bursting from her chest and striking Anna in the heart. But perhaps the prime example of this was when the Duke of Weselton's guards attempted to assassinate her and Elsa realizes she has no choice but to fight back, and, unable to control her fury, goes from self-defense to fighting back more aggressively, nearly pushing a man off the edge of her ice palace and pinning another to the wall with icicles, ready to kill him before Hans intervened and talked her down from committing cold-blooded murder to protect herself.

During "Let It Go", however, Elsa reveals a liberated side to her personality. Without stress, responsibilities, or the fear of hurting others, the queen is strong and unafraid, yet with an air of elegance still surrounding her. Based on this fact, she has confidence in her abilities and accepts them as a part of her, no longer worried or daunted by her restraints. In the segment, which was entirely about letting go of her fear of using her powers and embracing herself, Elsa decides to abandon what she was made to be so that she can be free to be herself. While expressing this, Elsa proves that she is notably creative and strong in geometry (her ice palace is made entirely out of geometric figures) and a daring young woman willing to reject her own fate as Arendelle's queen for the choice of her own personal freedom as well as to protect the people in Arendelle from her powers.

Following her return to power as Arendelle's reigning monarch, Elsa's original personality, long dormant since her childhood, makes a return. With a warm, welcoming aura, Elsa rules her kingdom with a genuine smile and spends most of her spare time using her abilities for the pleasure of herself, her sister, and the entire kingdom. As seen in Frozen Fever, this aspect of Elsa's personality has not only remained, but strengthened, as the short heavily showcased Elsa's lighter side as fun-loving, and extremely devoted to her sister, yet retained her sense of elegance, vibrancy, and compassion. In spite of this, Elsa continues to feel guilt for the past, which manifests itself into a personal mission to ensure that Anna is content at all times, even if it puts Elsa's personal health at risk; in Frozen Fever, she goes to great lengths to give Anna a memorable birthday and is dedicated to ensuring that even the slightest detail is perfect, despite having a cold that continually grows worse. During their first holiday season as a united family, Elsa comes to realize that she and Anna have no family traditions to share with one another, for which she openly blames herself. However, she later realizes that her and Anna's childhood memories of creating Olaf are her family's traditions as Anna keeps giving Elsa Christmas gifts based on Olaf which reminds her and Anna of their happy childhood and how much they still love each other.

In the sequel, Elsa seeks the truth about the source of her powers as well as who she really is. She begins to question her place in Arendelle as Ahtohallan calls for her every night until she answers it during "Into the Unknown". Upon entering the Enchanted Forest, Elsa becomes more confident with her abilities and heroic, protecting her family and the Northuldra from the Wind and Fire Spirits. She has since become more heroic, promising the Northuldra that she will do what she can to break the curse and free the forest. This drives her to seek the truth of the past by journeying to Ahtohallan despite the dangers it presented, as well as great strength and determination in fighting and taming the Nokk. After witnessing their parents' deaths through a memory stored in ice, Elsa blames herself and refuses to let Anna follow her into the Dark Sea. She finally finds Ahtohallan and recognizes herself as the Fifth Spirit, recognizing that her powers were indeed a gift and not a curse, no longer feeling restricted in using her powers. Having found her place among the spirits, she passes the position of Queen of Arendelle onto Anna and stays behind to live with the Northuldra as the forest's protector, finally at peace with herself and with both the freedom she's always wanted and her bond with her sister stronger than ever.