Vizzini is a fictional character from the 1987 film The Princess Bride, directed by Rob Reiner. He is portrayed as a clever but arrogant Sicilian criminal mastermind who often uses his intelligence to outsmart others. Vizzini is known for his catchphrase, "Inconceivable!" which he exclaims in response to unexpected events.
In the story, Vizzini is hired to kidnap Princess Buttercup and faces off against Westley, the film's hero. His overconfidence ultimately leads to his downfall, as he underestimates his opponents. Vizzini's character serves as a humorous representation of intellectual arrogance in the face of true skill and bravery.