Kallen's general personality is that of a strong willed, determined, loyal and brave individual, who can also be quite short tempered and impulsive at times; She is also compassionate, quite sensitive and truly gentle to those she cares about, and has a strong sense of justice. As a teenager, Kallen is fairly innocent when it comes to romance and will end up very flustered whenever subject like love or flirting will come to her ; She can sometimes show some tsundere trait.