They Called Him Diavolo (そいつの名はディアボロ Soitsu no Na wa Diaboro) is the twenty-second story arc in Vento Aureo.
Leading an injured Bruno toward the Coliseum, Doppio is told that Bruno is in fact undead and can only feel people's souls. Diavolo then disguises his soul as Trish's to gain his trust, and the two sneak past the rest of the gang.
Vinegar Doppio appears near the bottom of a staircase leading to Polnareff, he then transforms into Diavolo, who attacks Polnareff. After a brief exchange, Diavolo erases time but sees that Polnareff pierced his Silver Chariot with the Arrow. Silver Chariot then undergoes a transformation.
- 15 (61). They Called Him Diavolo