Diavolo

Diavolo is the main antagonist of Jojo's Bizarre Adventure Part 5: Vento Aureo,.

Profile
The finder of the Arrows, Diavolo is responsible for the proliferation of Stand Users in the world, and as the "Boss" of Italy's most powerful gang Passione, which corrupts Naples by dealing drugs in the streets, he is Giorno Giovanna and Bruno Bucciarati's superior and greatest enemy. He is the father of Trish Una, and commands Bucciarati's Gang to bring her to him whilst keeping her safe from the traitorous La Squadra di Esecuzione. Diavolo possesses another personality named Vinegar Doppio.

Crossover Appearances
Shonen Jump Warriors

Diavolo is one of the characters from Jojo's Bizarre Adventure side.

Shonen Jump VS. Capcom: Fight of Century

He is one of the characters from Shonen Jump side, his rival is Makoto from Street Fighter.

One Piece x JoJo: Warriors of the Ages

Diavolo is one of the characters from Jojo's Bizarre Adventure side.

JoJo's Bizarre Adventure X Marvel: Above the Cosmos

He is one of the characters from Jojo's Bizarre Adventure side.

Capcom Warriors

Diavolo is one of the Collab Characters of the game.

Project X Zone 3: Sacred Destinies

Diavolo appears as a Boss Unit, two years after the end of Vento Aureo, Ouma stopped his infinite deaths by bringing him back to life, he joined them and finds Giorno to get his revenge by being repeatedly killed for two years, during Ouma's final plots he was about to beat Giorno but he kills Diavolo giving him his second fate.

Trivia

 * Though never demonstrated, Diavolo can fluently speak Sardinian
 * According to a Top 10 List published in Weekly Shonen Jump in 2000, Diavolo is Araki's second favorite antagonist and 4th favorite character overall.
 * Diavolo's name means "Devil" in italian.