Duke is a character appearing in Professor Layton and the Diabolical Box. Both his appearance and his attitude seem to be rather aloof. He is one of the people to whom Layton and Luke must talk in order to gather all of the pieces of the missing photo scraps. Duke is seen, throughout Layton and Luke's time in Folsense, around the Museum's single entrance.
However, Duke, along with the rest of Folsense and its residents, turned out be an illusion created by a gas coming from Herzen Castle. The real Duke existed fifty years ago, the illusion of him disappears when the castle collapsed clogging up the hole where the gas spewed out.
Puzzles[]
Duke gives Layton and Luke a single puzzle during the course of the game. The only puzzle that Duke gives Layton and Luke is the puzzle "Turn On the Light". This puzzle must be solved in order to obtain a photo scrap.
Profile[]

Though it can seem like Duke talks down to people, it's actually just the unfortunate way he holds his face that makes him seem that way. His softer side comes out when he's with his little brother, Niles.
Trivia[]
- Duke bears an uncanny resemblance to Luke Triton, and also to Big Luke/Clive from the next Professor Layton Game, Professor Layton and the Unwound Future, especially the blazer he's wearing with the tie.
- There is a character that appears in the final (second-to-last in the EXHD for Mobile version) cutscene of Professor Layton and the Curious Village that looks very similar to Duke. They do not appear anywhere in the game aside from this scene.