The Black Ravens' second-in-command, Nabby is a grumpy street urchin who is forced to earn money in place of his father. Despite his grumbling, he is punctual and reliable, and he always gets the job done.
When Professor Layton, Luke, and Emmy ask about the black market, Nabby claims to not know anything about it. Later on, he takes part as one of the Black Ravens when Emmy chases them. He turned out to be second-in-command of the black market.
He is also one of the Ravens who helps find parts for and build Layton's catapult in order to stop Descole's machine attacking Misthallery.
In the post-credits cutscene, he is seen along with the other Ravens with Arianna, now being a friend of hers.