personality traits 
(+) bright, adventurous, fearless, hard-working, optimistic, friendly.
(/) sarcastic, outspoken, proud, smooth, tough.
(-) careless, rash, power-hungry, pretentious, prejudiced, manipulative.

Elaboration
stacey holds great self-esteem, which can very well sometimes be over the top, usually it is kept under control though. don't get her wrong she's just proud of her abilities and ain't afraid to share it. these are just the results of her hard work after all. she may however appeal to others as simply narcissistic due to her sarcastic nature. she thinks of her "mild" sarcasm as a way to get closer to others though. it's a strong trait of hers that some enjoy. a lil' sarcasm never hurts anyone. friends are great to have after all. they are great, to use, akin to chess pieces even, sometimes. apart from the run of the mill acquaintances she makes to move around her chess board though, she does try to make close friends with those she feels worthy enough. in which she always succeeds to acquaint with. smooth communicative skills right there. only the tough can be with the tough. "birds of a feather flock together y'know." yet, stacey's always aiming for the best and for the top, that's definitely a problem, not knowing when to stop as she continues her climb up the cliff, kicking others down on the way. who knows maybe she might meet someone on par with her, that she can't kick down on the way up incarnate.

many times this want to do even better leads to her rashness in doing things though, and carelessness. she does whatever she thinks best immediately, usually without thinking it through properly because you'd lose to time if you think too much she claims. but it's also because she's heavily positive she'd be able to do well. she fears nothing and she's bright enough to catch on when something goes wrong. it's just. a few times, things may go awry.

background 
stacey was born in new york city, united states of america. her dad was an american citizen that had been a researcher. all had been well really. until her dad had up and left, just like that a month after she was born, because he thought he couldn't do as well with a family holding him back. her mother had been a korean citizen, a doctorate, a cardiologist. she was the one who brought up stacey single-handedly. despite all the struggles she had with a one month old child, she had managed to overcome all her obstacles. stacey would label her the best mom ever,

after approximately ten years, there was no longer any reason for stacey and her mother to stay in america anymore. her "dad" had sent in divorce papers after all those years, never once visiting both of them and her mother had signed it without a single look of grief in her eyes. he had long been forgotten. that was where their life in south korea started. her mother working in the hospital, earning them a living, and stacey studying hard as she caught up with korean curriculum, wanting to make herself worthy of her mother's painstaking hard work and love.

it had all along been work, work and more work to her. her social life had been built but estranged. stacey had always thought of herself as a freak after all. otherwise, why'd her father leave her. to add on, she was often ridiculed in school for not having a dad. remember that one time she punched that big class bully and got his nose broken, good memories. now 18, stacey maintains friendly relationships with her peers, and has grown slightly tired of them by just watching off the sidelines. it was like they were no match for her either way, physical or academics. it was slowly tainting her mind, but when she realized there was no longer anywhere to step higher in that world, in came incarnate. the place she decided, she could test her limits to the fullest.

Relationships 
heo sukyung | mother | "oh, mommy, don't worry. your daughter here would come back in one full piece. muacks." | 40 years old | cardiologist. || the person stacey trusts and relies on most. she would do anything for her. anything. because her mommy is everything to her and she's simply a mommy's daughter.

hayden wilson | father | "absolutely disgusting" | 41 years old | researcher. || stacey isn't sure if she hates him. but she probably doesn't ever want to see him, not that she knows what she looks like. her mother had rid of all evidence of her father before she could remember things. whatever stacey feels towards him is simply negative though. a person that would leave his family for research, must have been mad. or nothing good.

damien lee | love-hate interest | "hell no. not him. even if he's got a priddy lil' face." | 22 years old | fellow initiate (ugh.) / rival / mommy's patient. || lord, where has she ever sinned. the two had been at loggerheads ever since they met during tactic training, they had fought over whose plan had been better, even though the kind instructor had agreed with both plans, saying they'd both work well. she had prayed never to meet the doe-eyed boy again. well, fate loves playing with her. guess who she saw the very next day visiting her mom's clinic, damien lee. she had addressed him as "the pimp", because he totally was, she swore so many of the girls during training were whispering about him ever so subtly. this in turn, got her a scolding from her mother. and a punishment to watch over the poor patient damien lee, since they prActically see each other everyday. "just remind him to Take his daily dose of medication." oh this was gonna be great. but hey, it doesn't stop her from coming up with new insulting ways to address him, instead it pumps her up even more. she's gonna see him and "notify" him on a daIly basis now, not just to have his medication, but also the fact that she could be superior. notably, she was at a rebellious age after all. she swears every single thing this guy does, seems to just oppose her in some way. number one, he excels in more than her, of course, she's still better, duh. number two, who does he think he is, a better actor? that cool facade ain't playing well with stacey at all. number three, the way he plans irritates her so much. it's so slow. why can't he just fasten the pace up. do i have to go even further with this list, it'd take hours, no, days to complete even. oh man, she just hates his guts. it's as if they were complete opposites y'know. but then again, what do they say about complete opposites? opposite poles attract.

misc
- stacey suffers con insensitivity to pain, she can't feel pain in the least, she's really dull to it. and that's why she can't control the amount of strength she uses when she fights. she actually holds a phobia for attacking pEople in their vital parts, when she doesn't actually want to kill them. because fun to note, she almost twisted some classmate's neck off once. this may be detrimental if she's on a mission to potentially not, Kill the TaRget. But since she can't really tell when she's hurt, even if she does get injured somehow, she'd be able to move on without groaning in pain, which is a good thing against torture too, really. (doesn't mean she doesn't lose blood though, so she could still die.) in fact, it'd be the easiest for her had the mission been to rid of a pest in society. she'd be able to strike where it hurts with uncontrolled strength.

- stacey has actual operation knowledge despite her young age, although lacking. she does know about medicine though. her speciality, making lethal poisons that cause heart failure. funny how that was the first thing she learned to do, without asking her mom. most of this knowledge is achieved through her mom. so, it kinda limits her to the heart.

- she has an addiction to cup ramen, ever since she arrived in korea, it's like she could eat it for months and not get tired of it.

- her favorite season is winter, because she's actually quite the heavy sleeper and loves to hibernate.

- she has a tendency to brAg and shuffle around a lot when she's nervous.

- Stacey is prejudiced against males in genEral. she's heavily affected by how her father had left her mother, and would put males down when necessary. she naturally also places least trUSt in them upon being in a group.

interview transcript
Good morning, initiate. Please introduce yourself for our records.stacey yawns into her palm lethargically before pushing her hair back and looking up. "well, good morning to you too." she chuckles lightly at the question before confidently answering. "name's sumin stacey heo. please only address me by stacey. born on the faithful day of september 2nd 1998. obviously, female. and also, korean-american with a dual citizenship."
CAN YOU TELL ME WHAT YOU UNDERSTAND ABOUT THE PROGRAM YOU'RE APPLYING FOR?
crossing her right knee over her left, she taps at her lips softly with her fingers, palm covering her chin as a fake smile creeps to her face. "assassination classes, shady . rid the world of evil. blah blah. my personal understanding starts with f and ends with n. fun. lots of it."
i see. now, i'd like to know what convinced you to apply for our program. why would you like to work with incarnate? 
she props her elbows onto her knees, now cupping both her cheeks, looking the least interested with that fake smile still plastered to her face. "me? i'm here to expand my circles and put my abilities to good use. like, gosh, my talents are completely wasted out there. don't get me wrong though, i 'absolutely' love aiding the weak. i mean, for justice, y'know."
what work were you doing before you applied for this program?
stacey lets out a snort. "breathing." waving her sarcastic remark away, she stares straight at the interviewer. "just typical boring schooling. and home tutoring sessions by my doctorate mommy."