Bucky

Bucky takes the shape of a chicken with no head at all, finished off with a small bow tie at his neck. The missing head does nothing to stop him from talking freely. White feathers cover the wings sprouting from his back, which carry him aloft.

Upbeat and quick with a joke, Bucky goes out of his way to befriend the students around him. He carries none of the menace typical of his kind and shows humans no ill will whatsoever, though he admits he would stand little chance fending for himself, a candid streak hinting that his friendliness is partly self-preservation. He also stands apart from cruder beasts like the Pig and Fish Devils, possessing a human's level of intelligence along with the ability to speak.

Bucky came into Tanaka's hands at some point and was installed by Tanaka as a classroom pet at Fourth East High School. The students were told up front that within three months they would have to slaughter and eat the bird. Instead the class grew attached to him, and when the day came they refused to harm him despite his being a Devil, which was the teacher's intended lesson all along: that every life has worth.

Because Bucky had learned her name, Asa Mitaka felt her classmates might accept her after all and went to carry him out to recess. She stumbled and fell onto him, crushing his body and spilling his insides, killing him by accident. Bucky was buried and Asa became the target of relentless bullying. It later emerged that the Class President had deliberately tripped her on the orders of the so-called Justice Devil, pinning the blame for the death squarely on Asa.

Much later, during the clash with Yoru, Denji coughs up a dove at a critical moment. The sight forces Yoru to feel the same anguish Asa once felt over Bucky's death, and she veers her Chainsaw Motorcycle away from Denji rather than cause that pain again, wrecking herself against a building. Once Pochita unmakes himself and remakes the world, Bucky lives again, back at Fourth East High at Asa's side after Denji keeps her from tripping over him a second time.