Diavolo

Diavolo is the main antagonist of Jojo's Bizarre Adventure Part 5: Golden Wind.

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.

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

Jump Unlimited
Diavolo appears as a DLC character.

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.

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.