Two uploads in one day!? I cun nut buluuuuv ut!!!!!!

Cerberus' Fourth Head- (who seriously needs a shorter name / nickname)
Is a demon called "serpent(s)". They are constantly hungry, but no matter how much they eat they can never gain weight or feel satisfied. They die of starvation and get reborn over and over again for all eternity.

(Symbolic punishment for mindless eating; gluttony)