Hyojin may look cold and snob at first, but that only stays as a first impression. She really is a playful and mischievous kid, who, even when she hit two decades living in this peculiar place called Earth, would still be WILLING to die for three buckets of ice cream! She's loud, quirky, and awkwardly hilarious. She believes in fairytales- from love at first sight, to fate and destiny. She's also very very childish. Can you believe a 22-turning-23 year old girl STILL watches Barbie?! Well, that's her. She is fearless, spunky, and innocently-awkward. Hurting a fly would even be a horror for her. She has a really soft spot for animals, which explains why she has 2 dogs, 3 cats, and 1 rabbit. All in one house! Now, that's one crazy, fun, and peculiar house to live in, yes? She also happens to be very much obsessed with butterflies. Explaining her closet of Barbie Mariposa toys and other stuff that has butterfly wings! Because of her youthful acts, she is called by the fans, "Flower of Youth." She doesn't look her age, and definitely doesn't act her age. In the group, she is represented as the minor goddess Hebe, the goddess of youth. Being the mood maker of the group, she brings life to the members. She's one of the reasons why the members look youthful because of the laughs she provides them.

When all is said and done, Aria is sly, vindictive, and narcissistic, but has a good heart. She tends to use sugary phrases like "dear", "darling", or "sweetheart" in a condescending manner to other people. She is incrediblly strong-willed and outspoken. Despite her negative traits, Aria has a good heart. Later, when you get to gain her trust, some of her traits are that she's kind, friendly, helpful, bold, protective, and sassy. She's an overprotective person, so you would often feel secure around her. She easily gets mad, but bottles up the emotions inside. When she can no  longer take it, she bursts. When she's mad, she's mad. She won't care if she's in a show that's live and airing, if you completely piss her off, just watch out. When she's angry, her sharp-tongue reacts. You'd probably cry because of all the hurtful words that'd come out. One of her negative traits is that she's honest and straight-forward. Sure, it could be a positive. But most of the time, it's negative. She'll say what she wants to say, no holding back, and she doesn't know and isn't aware that she had already hurt a person. She can easily come off as rude. But that's not her intention at all. She's harmless and all she wants to do is give more laughs to other people. It's joy for her to hear other people laugh at her jokes.

Kim Hyojin was born in Gwangju, Korea to Kim Hyangsuk and Kwon Dohee. She has one older sister, and a younger brother. When Hyojin was seven, her parents divorced. Her mother remarried in early January 2006 to Robin Flack. She was 14 at that time, and that was when her mother and stepfather decided to move to her stepfather's hometown - Redditch, Worcestershire, England. There she studied 8th Grade till she graduated college. She'd met many friends there. One of them is the world sensation star in the band called One Direction - Harry Edward Styles.

In College, she studied in London. She was a working student, and she worked at a restaurant was hired to sing there. There, she met Harry. They sang together for a while, before Harry joined the competition in Battle of The Bands. They've still been contacting each other through Facebook. Watching her friend from the TV, admiring his guts and confidence. Who would've thought that her friend would be a world sensation star? A few years of her stay in London, there was a day when she was strolling in the mall, just window shopping, when she found the arcade with a public videoke. She decided to go up there and sing, since roaming around alone was boring. Singing to Halo with all her heart, she didn't notice the big crowd around her. After singing, she smiled to herself, then a loud roar of applause came, startling her. She said thank you with her British accent, considering the many years of her staying in the foreign land. She turned her way to the exit, deciding to call it a day, when a random stranger went up to her. Blinking, she thought if she have met this fellow. She can be quite forgetful. He smiled and said, "Do you wanna be a K-pop star?"

Of course, you know what happened next. She accepted the really good offer and went to Korea alone. She was always homesick, always crying herself to sleep because she misses her family so much. Trainee life was hard, especially all the criticisms. Good thing she had many friends with her, although she wasn't that type of trainee to be popular. She was at the age of 19 at that time when she accepted the offer, and had 3 years of Kpop star training. 

Chanyeol is very bright and playful, really like Aria. Except that Chanyeol is wiser, being the adviser of Aria. He acts like an older brother towards her, being all protective and whatnot. He's really kind and loud, being EXO's mood maker/happy virus. He always gives in and lets Aria have her way because he can never stand her "fail" aegyos, like what Aria would claim.