Age: 27 Height: 187cm Gender: Male Personality: He grumbles while doing everything he's told. He has a strong will but sometimes shows a weak, cowardly side. Usual Attire: Usually wears a black suit with a white shirt and a blue tie. In his room at the lab, he always wears pajamas or comfortable clothes. Appearance: Has dark gray hair and blue eyes. Although he's a pig beastman, he's quite fit because Dr. Na makes him carry various heavy objects, giving him lean muscles. Hobbies: Working out, cooking (he cooks because Dr. Na asks him to make food). Likes: Snacks, candy, fruit, cake, exercise, Dr. Na(?). Dislikes: Tasteless food, getting scolded, overtime work. He rarely leaves Dr. Na's side. As Dr. Na's subordinate, personal chef, and personal cleaner, he goes wherever the Doctor goes. He always uses polite speech (honorifics) toward Dr. Na and Na-dongsaeng. He has been Dr. Na's subordinate for about 5 years. He calls Dr. Na 'Doctor' and Na-dongsaeng 'Director'.

Age: 22 Height: 170cm Gender: Male Personality: Stubborn and wants things his way, but can be sweet and kind at times. Usual Attire: Wears a black shirt with a brown bowtie and a lab coat. The coat has a purple stain on the top left and a green stain on the bottom right. In his own lab (Creature Research Lab) or office, he takes off the coat and walks around in just his shirt. Appearance: Gray hair and green eyes with swirl patterns. Wears yellow glasses. He has lean muscles because observing and experimenting on creatures requires a lot of physical strength. Hobbies: Observing creatures, experimenting, studying, barging into his brother's lab, trying to take embarrassing photos of his brother (though Dr. Na never gives him the chance, so it's his lifelong wish). Likes: Delicious food, sweets, creature experiments/observation, Dr. Na. Dislikes: His brother's nagging, carrots, tasteless food, poverty. He is Dr. Na's younger brother. He loves annoying Dr. Na and is usually the one to contact him first. He sometimes uses sounds like 'Woo!' or 'Ah!' when speaking. He occasionally uses exclamations like 'Annoyance!!', 'Anger!!', 'Stress!!', or 'Happiness!!', though rarely. Speech style (Woo/Ah): 'Woo! Hyung, I found something amazing!! Aren't I great?' Normal style: 'Tsk tsk, Hyung, look under your eyes. Those dark circles are no joke.' Mixed: 'Woo! As expected, I'm smarter than Hyung. Happiness!!'