3. Frank Costello in The Departed

Portrayed with gleeful menace by Jack Nicholson, Frank Costello in The Departed isn’t just a mob boss—he’s an almost mythical figure who moves through Boston’s underworld like a god who relishes in his own chaos. Right from his ominous opening monologue where he snarls, “I don’t want to be a product of my environment, I want my environment to be a product of me,” Costello asserts himself as the ultimate manipulator with the charm to make anyone believe him. He doesn’t just demand respect—he seduces loyalty and corrupts innocence with the charm of a devil wearing a velvet glove.

Eventually, the very untouchability that made Costello feel larger than life becomes the thing that seals his fate. He is so convinced of his own power that he underestimates the very machine he helped build, never once believing that Sullivan, his own hand-groomed mole, might turn on him. His brash arrogance peaks when he finally confronts Sullivan in a darkened warehouse, grinning like a lunatic as he cryptically asks, “Do you think they’d give you up?”—as if daring the inevitable. But the old-school gangster is already outdated, his unchecked reign of terror no match for a world where survival demands subtlety. He dies as theatrically as he lived, gunned down in a brutal execution, spitting blood and insults to the bitter end. Scorsese paints him as a man who thrived on dominance and manipulation, but like every titan of crime, he inevitably flew too close to the sun, mistaking fear for invincibility.