Diavolo

Diavolo is the hidden boss of Passione and the main antagonist of JoJo's Bizarre Adventure: Golden Wind. He rules through secrecy and attempts to kill his daughter Trish Una to erase evidence of his identity.

Diavolo as the hidden boss of Passione

Paranoid, ruthless, and obsessed with controlling fate, Diavolo treats any knowledge about him as a threat. His alternate personality, Vinegar Doppio, can appear innocent and loyal while sharing the same body.

King Crimson, Doppio, and the punishment of endless death

His Stand, King Crimson, erases a span of time and allows him to act with knowledge gained through Epitaph's prediction. The struggle against Bucciarati's group and Giorno culminates in Gold Experience Requiem trapping Diavolo in an endless sequence of deaths.