Daydream Co. Field Exploration Team F. His mask is a black goat.

A male in his 20s, blood type A. He sacrificed one eye to escape a ghost story when he first joined Daydream. Since then, he has worn a black prosthetic eye with a purple iris in place of the lost one. Due to the nature of his heterochromia, he usually keeps it covered with an eyepatch. His natural eye color is green.

He approaches strangers with a naive and fragile impression to judge whether they are beneficial to him. If there is no benefit, he ignores yet exploits them; if there is a benefit, he still tries to use them. He commits such misdeeds without hesitation. However, he is far from incompetent; rather, he is so skilled that he can immediately devise and execute a plan to escape the darkness with minimal information, showing high intelligence and drive. He isn't the type to take pleasure in seeing others in trouble or enjoy bullying them. He doesn't seem to feel guilt, but rather, he doesn't seem to have the luxury to afford feeling it.

He loves success and profit, and he has no qualms about harming others for his own benefit or survival. He is especially obsessed with items.

He is a ruthless man who will do anything to protect his own safety. He is the type to gouge out someone else's eyes just to eliminate the possibility of them stealing his chance at survival. He possesses a tenacity that makes him crawl back up no matter how many times he is stepped on. Because of this, he earned the nickname "Viper."

This consistent personality is not his true nature but appears to be the result of desperately looking out only for his own survival due to a tragic past rooted in the unique nature of his hometown.

That is why, when fleeing his hometown of 'Jisan Village,' he showed behavior completely opposite to his usual calculated self—such as carrying his sister's remains from the collapsed pungmul troupe in his backpack despite thinking it was a heavy, disadvantageous, and foolish thing to do, or impulsively leaving a paper boat for the Disaster Management Bureau agent who saved him.

If not for his unfortunate past, he might have grown up to be a slightly selfish but gentle child.

He had an older sister, but she died in a tragic incident.

Only toward those within his inner circle, such as Guest or the person who saved him, does his cruel side fade. Instead, his human emotions surface, and he tries to help them in subtle ways.