>>538302673
I don’t think so. He is something none of the darkners are even aware about. And he lacks any clear identity, just like the forgotten man (Papyrus). Ralsei could be undead since something is really strange about his existence, and those frog and bunny dustners are probably not Dakners either. Dust… living walking dust.

Strangely, Papyrus actually does create the “bonetrousle” song you hear in Undertale, as chapter four in Deltarune indicates Papyrus is producing the sound. And on the same day Papyrus vanished, Susie hears the song of the sea for the first time, but from the other side of the lake.

Perhaps Ralsei sings the song in the darkness and Papyrus plays it by the waters. Why do they do it, I don’t know.