|“||Soon the whole world will know... and FEAR... the name Nikolai Diavolo. Yes Katya. Everything, or Nothing.||„|
|~ Diavolo announcing his goals to Katya|
|“||What a poor lie.||„|
|~ Diavolo, moments before he orders an assassin to kill an MI6 agent in Peru|
He is a former KGB agent and power-hungry businessman who uses metal-eating nanobots to destroy competing businesses and factories over the world so that he can reign supreme in the corporate world. When James Bond, the 007 agent from the MI6, meddles into his affairs, Diavolo decides to get rid of him not only because of his interference to his plans, but also to avenge Max Zorin.
He was voiced by Willem Dafoe, who also played Raven Shaddock in Streets of Fire, Eric Masters in To Live and Die in L.A., John Geiger in Speed 2: Cruise Control, Max Schreck in Shadow of the Vampire, the Green Goblin in Sam Raimi's Spider-Man trilogy and Spider-Man: No Way Home, Armando Barillo in Once Upon a Time in Mexico, George Deckert in xXx: State of the Union, Lord Cob in Tales from Earthsea, Rat in Fantastic Mr. Fox, J.G. Jopling in The Grand Budapest Hotel, Jack Lassen in The Simpsons, Ryuk in Netflix's Death Note, Thomas Wake in The Lighthouse and Clement Hoately in Nightmare Alley.
It was shown throughout the game that Diavolo is completely ruthless and despises Bond and MI6. He is an ex-KGB agent and the KGB were so frightened of him that they let him go to be on his own. His biggest influence for what he was doing was Max Zorin.
So, besides killing Bond for meddling in his affairs, he also wanted to avenge the death of Zorin by killing 007. He was killed when Bond made him fall to his death in Diavolo's own missile silo.
As Bond finally left, the whole building exploded along with the missile silo where Diavolo was trapped in. That was how he died in the platform version for Gamecube, XBOX and PS2.
In the Game Boy Advance version, his body was most likely mutilated by the toxic rays that hit him from the machines Bond shot at.