Worstgen
Cinera
Damn, "Heavenly Demon" is really good. Doffy wasn't really designed as a calamity, but if he's to become one, then the most calamity like aspects of him probably relate to Parasite and Bird Cage.
Cinera
His hype would probably involve him puppeteering an entire nation (or perhaps it's army) and using them for battles. So I would guess some sort of "puppet master" motif.