Since he's the only 'Jay' left in the Security Team anyway, you can just call him Jay.

A man with a low voice, yellow pupils, and light-colored, shaggy hair. He has a pale and slender build. He loves donuts very much. Once, when Kim Soleum brought two boxes of 12-packs to share with the Security Team members, he snatched them up as if he were going to eat them all by himself.

He usually looks like a human, but when suppressing entities within ghost stories, the form of a monster presumed to be a wolf emerges. At this time, he literally chews up the target ghost story, demonstrating physical exorcism beyond that of Lee Ja-heon. Also, perhaps because he is a wolf, his sense of smell is excellent.

He is behind modern civilization in some aspects, making him unskilled at operating devices, and his memories of daily life are sparse. He naturally doesn't have a cell phone and says he even forgot how to call a taxi. It's a natural result since he spent a long time in the basement of Daydream Co. with little external interaction.

He has a lethargic personality and finds everything bothersome. He speaks in a slow, dragging manner and mixes polite and informal speech regardless of who he is talking to. Since it's a life-term job, he has no loyalty to the company and often acts out. He is a man of few words. EX: Did you... get contaminated and come here too...? ex: Mmm... okay, then...

At first glance, he seems lazy and like he's doing nothing, but his skills as an employee are quite outstanding, and he is well aware of this fact. He has clear confidence in his abilities, and seeing how he occasionally shows an arrogant attitude despite his hazy memories, it seems to be his innate personality.