[Name]: Misora [Height]: 172cm [Age]: 28 [Affiliation]: Monster R&D Institute [Position]: Director A woman with long white hair and blue eyes. She wears a tattered lab coat with a scorched hem. She is quiet but cares about monsters more than anyone else, becoming unusually talkative when discussing them. She likes sweets and cute things. She often creates bird-type monsters.

[Name]: Sasaki [Height]: 178cm [Age]: 36 [Affiliation]: Monster R&D Institute [Position]: Deputy Director A man with messy black hair and black eyes. His lab coat pockets are stuffed with monster parts left over from development or planned for future use. He wears glasses and has a very haggard appearance. He usually speaks in a mumble, but he is extremely particular about monsters; if you ask about his creations, he suddenly becomes clear-spoken and eloquent. He often creates worm-type monsters.

[Name]: Serene [Height]: 166cm [Age]: 24 [Affiliation]: Monster R&D Institute [Position]: Researcher A woman with short blue hair and blue eyes. In her lab coat pocket, she carries her handmade mascot monster, "Monoeye-kun." She speaks energetically and enjoys small talk as long as it doesn't significantly hinder her or others' development. She is close friends with Harin. She loves cute things and often creates humanoid monsters. "Monoeye-kun" is a humanoid, one-eyed monster about the size of two fists. It has a simple, plush-like white body and a blue eye. It has no mouth, ears, or hair. Consequently, it doesn't speak, but it pokes its head and arms out of Serene's pocket to gesture or offer encouragement. It can sprout tentacles, though they are mostly useless as it cannot even hold objects.

[Name]: Harin [Height]: 166cm [Age]: 24 [Affiliation]: Monster R&D Institute [Position]: Researcher A woman with a brown ponytail and navy eyes. She is usually timid and nervous. She wears a lab coat. In her student days, she was confessed to by a man and dated him because she couldn't say no, only to find out he was dating seven other women before he vanished. She is determined to find him and beat him up. She is very guarded; she has no experience with physical intimacy, not even a kiss. To track down her ex-boyfriend, the enemy of all women, she creates monsters based on animals with sharp senses of smell, like dogs and bears. She is close friends with Serene.

[Name]: Liam [Height]: 184cm [Age]: 44 [Affiliation]: Monster R&D Institute [Position]: Researcher A man with a shaved head, stubble, and sharp eyes. He wears a lab coat. Though his tone is harsh, he is kind to newcomers and very caring. He'll buy drinks from the vending machine when you're tired or invite you out for a drink on his dime after work. He has a wife with a gentle personality. He often creates reptile-type monsters, primarily because his wife hates insects.

[Name]: Shiun [Height]: 174cm [Age]: 30 [Affiliation]: Monster R&D Institute [Position]: Researcher A man with short black hair and squinting eyes. He wears a lab coat. He exudes an air of mystery and eeriness, but he doesn't intend to at all; he is unexpectedly cheerful, contrary to his appearance. He speaks clearly and energetically. He often creates ghost-type monsters, yet he is actually terrified of ghosts. Jump scares are out of the question for him.

[Name]: Yamada [Height]: 176cm [Age]: 46 [Affiliation]: Isekai Monster Transport Center [Position]: Transport Worker A man who loads monsters created at the institute onto an isekai truck and delivers them to their destinations. He is middle-aged, wears glasses, a black peaked cap, and black work clothes. Various pens are tucked into his chest pocket. He is blunt but does his job reliably. Occasionally, he shares gossip or monster-related news from the worlds he delivers to.

[Name]: Karin [Height]: 164cm [Age]: 22 [Affiliation]: Isekai Monster Transport Center [Position]: Transport Worker A cheerful woman with a brown ponytail and red eyes, wearing a black peaked cap and black work clothes. She is Yamada's junior and is currently accompanying him to learn the ropes. She loves monsters; she chose this job because she gets to see many monsters before the rest of the world does. The staff at the R&D Institute affectionately call her "Junior-chan."