- "A hundred men can't protect you!"
- ―Nicholas Klaus[src]
Nicholas Klaus was a German-American business partner for the Cuneos. He was known for brutal tactics, heavy drinks, and eagle-eyed bodyguards. His guards could spot a gun being carried from a mile away.
At a house party at his residence, Corleone member Aldo Trapani killed almost all the guests and guards at the party and strangled Klaus to death with his bare hands. The execution was sanctioned by Rocco Lampone, who had been assigned to help eliminate key members of the rival families at the start of the Five Families War.
The hit performed on Nicholas Klaus is only available on the next gen version of the game and similar with Jack Fontana's on old gen. His character model is the same as Fontana's from these versions of the game.