Diavolo/Personality and Relationships
Personality
Diavolo has a very cruel and ruthless personality. He highly dislikes for anyone to see his true face and will relentlessly hunt and kill those who do. He is even willing to kill his own family just to stop the possibility of his identity being discovered as he persist on killing his own daughter just because she is related to him. His high resolution of "overcoming his past" made him reach the top and take control over a Mafia that he lead to completely take over Italy, such things made him to take the decision of erasing his past and eliminating his relatives without leave a trace behind.
Diavolo's position in Passione as The Boss was highly respected by all members, due to this organization helping them when they where in trouble or they needed help, this even made Bruno to take the hard decision of betraying him and even Fugo couldn't betray something that he adopted as his family. He does not forgive traitors within his ranks often declaring "All traitors must die!" or "How dare they bite the hand that feeds them". He instantly declares traitors or those conspiring to defect as enemies such as Buccellati's Gang and La Squadra di Esecuzione.
Like other main antagonists in the series, he uses the prefix I or Me (この, kono) to announce his name in a sign of superiority over others and boasts about being the chosen one to lead the world. When his other personality, Doppio, is killed, Diavolo bore no visible emotional reaction to his death.
His personality is split so completely that when Silver Chariot Requiem switches everyone's souls, Diavolo and Doppio adopt different bodies: Doppio in Buccellati's body, and Diavolo in Guido Mista's.
