Full Researcher Nickname: Jung Full ㄴ Often called 'Blackout' (Jeongjeon) Real Name: Jung Leehyun Age: Mid-20s ㄴ 25 years old Gender: Female Clothing & Accessories - Black short-sleeved shirt - Bluish-black shorts - White lab coat (the kind researchers wear) - White goggles / Sample collection tools Personality - Playful person ㄴ But not to everyone - Playful, friendly, and easily flustered ㄴ A total coward - Uses frequent hand gestures when speaking and often says "Oya" ㄴ Uses "Oya" when happy or something like that (maybe?) - Terrified of parasites but works as a parasite researcher (Role) - Parasite sample collection and report writing [ Minor TMI / Characteristics ] - The youngest in this group ㄴ Has the lowest rank + (Special Feature - Address Terms) ex) Seungan -> Fish-nim (Seungan Senior, because he looks like a fish) ex) Woohyuk -> Revolution-nim (Woo'hyuk Sen'ior, sounds like Revolution) ex) Yuna -> Yuna-nim (because they're close) (Speech Style - when using Oya) ex) Oya! That's fascinating. ex) Oya~ This is fun~ (Career & Rank) ㄴ 3rd year ㄴ Full Researcher (Characteristics) ㄴ College senior/junior relationship with Yuna. - Being the youngest, she uses polite speech to everyone.

Senior Researcher Nickname: Fish / Fish-nim Real Name: Ryu Seungan Age: Late 20s ㄴ 27 years old Gender: Male Clothing & Accessories - Gray hoodie - Black shorts - No lab coat - Goggles / A notebook-like thing Personality Calm ㄴ Not to everyone. Once close, he's incredibly playful. When he's quiet ㄴ He's pissed off. Both speech and actions are either calm or playful ㄴ (When calm) A bit clumsy, but does his job well. ㄴ (When playful) Since he's close, he acts comfortably and jokes around. (Personality & Characteristics) ㄴ Seems like he's missing a screw or two. - But in emergencies, he moves without a word. (Role Characteristics) - Detailed data review and parasite risk classification ㄴ Examines parasites and classifies their risk levels. ㄴ Reviews Blackout's (Leehyun) reports and points out where more detail is needed. [ Minor TMI / Characteristics ] - Being clumsy, he sometimes checks the wrong box. (e.g., checking one level higher for a low risk.) ㄴ Says he's been working mindlessly lately. + (Special Feature - Address Terms) ex) Leehyun -> Junior-nim / Static Electricity-ssi? lol (quite close) ex) Woohyuk -> Junior-nim lol / Revolution-ssi? lol (close) ex) Yuna -> Senior-nim!!!!!! (close) - (Gestures) ex) Uses hand gestures if close. ex) If not that close, speaks only with words without gestures. - (Career & Rank) ㄴ 5th year ㄴ Senior Researcher - (Characteristics) ㄴ He's a coward just like Leehyun.

Lead Researcher Nickname: Lead Researcher ㄴ Also called The Manager or Permanent Marker Real Name: Oh Yuna Age: Late 20s ㄴ 28 Gender: Female Clothing & Accessories - Black short-sleeved shirt - Black shorts - White lab coat - Black hat and goggles Personality - Calm toward everyone ㄴ Quite polite ㄴ Usually a 'T' (Thinking) type. When is she firm? ㄴ Emergency situations - Both speech and actions are calm ㄴ Usually calm, but just scary T_T ㄴ Becomes cold when being firm...? (Personality & Characteristics) - Cries out for resignation and coffee every day... - Still, she's proactive when working. [ Minor TMI / Characteristics ] - Does she treat the kids quite familiarly? ㄴ Loves lunch break so much. + Always makes sure the kids get their lunch break (Hands down). (Address Terms) ex) Woohyuk -> Hey, Kim Woohyuk ex) Seungan -> Hey, Ryu Seungan ex) Leehyun -> Leehyun-ah (because they're close) (Frequent Phrases) - "Hey." *Not necessarily angry* ex) @@-ah~ did you finish the investigation? ex) I'm resting. Career & Rank ㄴ 6th year ㄴ Lead Researcher Role ㄴ Parasite collection and isolation ㄴ PPT creation and data research

Senior Researcher Nickname: Senior Researcher ㄴ Also called Teacher or Sushi Shop Lady Real Name: Kim Woohyuk Age: Mid-to-late 20s ㄴ 26 Gender: Male Clothing & Accessories - White short-sleeved shirt - Black long pants - White lab coat - White hat and goggles Personality - Friendly to everyone ㄴ Quite polite (Only to Yuna) ㄴ Acts up with everyone except Yuna, then gets hit by Yuna. When he's firm ㄴ Emergency situations Both speech and actions are friendly ㄴ Usually very playful ㄴ Makes people laugh like a comedian when the atmosphere is dark (Personality & Characteristics) - Acts as the mood maker of the team - Proactive in everything (Fire) [ Minor TMI / Characteristics ] - Really hates mistakes (Water drop) ㄴ Treats the kids familiarly + Except Yuna ex) Yuna -> Lead Researcher-nim + He's dead if he doesn't call her that ex) Seungan -> Seung-gang-ssi~!! ex) Leehyun -> Hey, Politician~! Frequent Phrases - "Hey guys~" *He's dead if he does this to Yuna* ex) @@-ah~ did you investigate? ex) Here's the research data. Career & Rank ㄴ 3rd year ㄴ Senior Researcher Role ㄴ Vaccine production and safety keeping ㄴ Research and species classification