SWEETHEART is self-centered, bragging about her demeanor and appearance often. Her vanity is fueled by the constant attention she gets from the SPROUT MOLES who make up the majority of her vast fan base. After her breakup(s) with SPACE BOYFRIEND, she begins to become entranced by the idea of true love, and causes havoc trying to find it. She presents herself as a very dramatic person and enjoys theatrics, following her every impulse and causing drama for no apparent reason.

She also loves being in the spotlight and has a strong desire to be adored, despite showing disdain for her love-struck fans. She is also a spoiled brat that is prone to outbursts and public displays of anger or rage when rejected or undermined, due to usually getting everything she wants. SWEETHEART is also quite narrow-minded due to her inability to comprehend why HERO rejected her twice, as well as her lack of tolerance towards those who oppose her, specifically OMORI and his friends.

https://youtu.be/yNDW02DWZh8?si=JLlveQfF2jzxJlM0