Cagnazzo is one of the four Elemental Archfiends from Final Fantasy IV. Under the orders of Golbez, he killed the King of Baron and impersonated him, using the Red Wings to retrieve the crystals for Golbez. Baigan, whom he turned into his underling, alerted him that Cecil, the commander of the Red Wings, was questioning him, so he demoted Cecil from his post and ordered him to deliver a ring to Mist Village. When Kain Highwind tries to argue with him, he is ordered to accompany Cecil. The ring was actually a Bomb Ring, which destroyed Mist Village. After Cecil becomes a paladin in Mount Ordeals, he uses an underground tunnel to return to Baron and confront the king.
Cecil finds his friend Yang on the pub, who had suffered from amnesia and been brainwashed by Cagnazzo, but manages to make him recover consciousness. Along with Yang, Palom, Porom and Tellah, he enters the castle, but is confronted by Baigan, having to kill him to gain access to the throne room. There, Cagnazzo reveals his true form and attacks Cecil, but is defeated. As he was about to leave, Cagnazzo uses his last strength to activate a trap in the room, making the walls move to smash them all. Palom and Porom make the ultimate sacrifice and turn themselves into stone to stop the walls.
Later on, Zemus resurrects him along with the other fiends inside the Giant of Babil, where they team up to fight Cecil, but even then they are all defeated.
- This monster appears in various remakes of Final Fantasy I as one of the bosses in the Hellfire Chasm.
- The fiend also appears in Theatrhythm Final Fantasy as a monster in Final Fantasy IV scenarios and the Chaos Shrine.