Dalv

Dalv is a humanoid monster with a purple complexion, fangs, and horns. He wears a dark purple cloak with a hood that conceals his face. Excluding his horns, his appearance is similar to, if not based on, that of a vampire. He also wears a white medieval shirt beneath his cloak, as revealed in his overworld sprite if Clover spares him in a True Pacifist or Neutral Route.

Dalv is socially awkward and claims to desire solitude. He often monologues about how he sent the other monsters away and how he wonders if they ever really cared about him, and is consistently interrupted by Clover. Despite that, he later reveals that he does not actually want to be alone, but rather fears that any friends he makes will leave him behind the moment they grow tired of the Dark Ruins. When hanging out with Clover, he seems very happy to have a friend to talk to. His interests include writing and illustrating children's books, playing the organ and growing vegetables (especially corn).

While it is never stated directly, it can be inferred that Dalv was friends with Kanako Ketsukane prior to the events of the game from the portrait of Dalv that can be found in Kanako's bedroom.

In the secret tape (found behind Chujin's gravestone), it is revealed that Kanako was in Snowdin with an unnamed monster (most likely Dalv, based on other clues) when they were attacked by a human. Though Kanako was unharmed, Dalv specifically was injured in the attack.[1][2][3] Additionally, from the "Is this some sort of haunting?" remark, it can be inferred that Dalv is aware of the death of the human in question (either through directly witnessing Axis terminate them or being told the news after it occurred). After the incident, Dalv moved to live in the Ruins in self-imposed isolation. Chujin (potentially during his time with Martlet) began leaving cobs on corn at Dalv's doorstep (perhaps out of sympathy or a request from Kanako). This can be deduced from Ceroba explaining that her family purchases corn from Starlo's family, and the fact that she herself does not recognize Dalv during the True Pacifist ending. Dalv's remark that the person leaving the corn 'stopped showing up' also lines up with Chujin's death.