Diavolo appears as the enemy faced in Chapters 12 and 13 (as "The Boss"; A suited silhouetted individual shrouded in shadow), as well as in 20 and 22, where he utilizes King Crimson to, within the game's perspective, alter time.

What episode does Diavolo appear?

His Name Is Diavolo (そいつの名はディアボロ, Soitsu no Na wa Diaboro) is the thirty-third episode of Golden Wind and the one-hundred-forty-sixth episode of the JoJo's Bizarre Adventure anime. The episode covers from the end of Chapter 567 to most of Chapter 571 of the original manga.

Where does Diavolo spawn project JoJo?

Diavolo spawns in Italy. Diavolo has somewhere around 1500 health. Diavolo spawns every 13 minutes 20 seconds with a 1/3 chance (6 minutes and 40 seconds with the 2x event). Diavolo is one of the two bosses that can spawn in Serious Mode (the other being Kira).