They kinda look similar to the Uncanny Charm's river ghost and bathhouse grandpa character
The old man during the 80s chapters was my fav why was he so cute then he turned into a total daddy help
I had a hunch but I can't believe my cutie old man daddy turn out to be King So byeol he was calling him scum a few chapters ago his appearance really suits the Underworld and his brother fits more for Earth as he keep going back to sleep.
They kinda look similar to the Uncanny Charm's river ghost and bathhouse grandpa character