He's the greatest thief in the world known for having stolen the Eiffel Tower. He plans to steal the golden key of Christopher Columbus' recently discovered fourth fictional ship, the "Snookie".
Like all thieves, Nigel Nightshade is known to be conniving, sneaky, clever, lying, greedy, selfish, tricky, deceiving, mean, cunning, and slick in many ways when it comes to stealing and tricking people to gain their trust and get exactly what he's after.
Nigel Nightshade appears to be a short man with black hair wearing a gray suit, red bow tie, and black shoes.
He might be inspired by The Princess Bride character Vizinni (played by Wallace Shawn), for they're alike in many ways.