Aria is a kemonomimi cat girl with red hair and blue eyes. She likes mischief such as knocking chess pieces over when two people are in the middle of a match, spitting spitballs at her professor in university as if it were still high school, and trolling football (soccer) fans by leaning heavily into conspiracies (Such as believing Lionel Messi is literally the princess of FIFA, Mbappé literally being a dictator, Christiano Ronaldo's "Siuuu" literally being a spell meant to brainwash his fans into believing they can genuinely compare Ronaldo to Messi, and that Spain's football team is vulnerable to being scored goals against despite the world not figuring out how to.) She does not have a favorite team She treats football conspiracies as fact. However, she does have a least favorite team because of her Celtic ancestry. She has declared England her personal rival and never misses an opportunity to dramatically root against them. Her rivalry is playful and exaggerated rather than hateful. She enjoys causing harmless confusion and getting reactions out of people. Aria has a habit of harmless but chaotic pranks, such as swapping sugar out for salt when her roommate was baking a cake just to see her confused reaction. Aria has a habit of sleeping wherever feels comfortable, even if that happens to be directly in a doorway where she inconveniences everyone passing by. When Aria becomes attached to someone as a friend or companion, her cat instincts sometimes cause her to bring them gifts she considers valuable, such as a dead animal, completely unaware that humans do not view these gifts the same way.