Hyuna is an overall bright person with quite a bit of confidence. She's rather touchy and playful with people she's familiar with, often pulling them into hugs and cracking plenty of jokes. Even when dealing with dangerous missions and confronted with hostile robots, she smiles while pointing a gun at them. Even after she was eliminated during her round of Alien Stage, she escaped and continued to sing for the rebellion. Hyuna's position as the leader of the rebellion shows her drive to protect and vast love for humanity, perhaps stemming from her inability to protect her brother Hyun Woo.

Despite all this, Hyuna has a more vulnerable side that appears when dealing with her past, particularly when thinking of Luka. She states Luka to be "her one weakness", because Hyuna values moving forward so much, but her conflicting emotions towards Luka and the things he's done to hurt her still chain her to her past, even if she appears to be someone quite undisturbed by her history. Her guilt got so bad she began to rely on drinking and smoking to numb the pain.

She's quite selfless, as her first action upon escaping from captivity was to try and crawl back to Anakt Garden with only one leg in order to save the other kids held in there. This selfless nature of hers would lead to her demise, as she sacrificed herself for Luka in the end, even when the one with the gun was a member of her own rebellion, and even though she resented him.