The character known as "Dimoni negre" embodies the antagonist Kurooni (Black Oni), a secondary foe who abducts Aya, a flute-bearing child, to provoke the protagonist’s involvement. Kurooni dominates Akaoni (Red Oni), enforcing servitude through fear and brute authority. His reign of terror peaks as he exploits a village’s populace, inciting chaos until the protagonist confronts and defeats him. This victory breaks Kurooni’s hold, freeing both Aya and the oppressed villagers while releasing Akaoni from his thrall, enabling the latter to aid in future trials. Kurooni’s malevolence remains rooted in his role as a tyrannical force, symbolizing oppression and unchecked power, with no documented lore or motives beyond his function as a narrative obstacle. His influence ends with his defeat, leaving no trace in further chronicled tales.