Rudolph is the old man who is usually found at the gateway to Chinatown. Professor Layton and Luke Triton ask him for information regarding Future Layton and The Family later in the game. He is also found in the Pet Shop later on the game.
Rudolph wears a white shirt, blue trousers, brown shoes, beige hat and beige cardigan
Rudolph gives the following puzzles in Professor Layton and the Unwound Future:
"No one knows what's going down in Chinatown better than Rudolph. Lately, he's been fanatical about the food at Pepper's Noodle Palace, much to the dismay of his wife Myrtle, who always packs his lunch. His grandson is Hazel."