Sterling is a minor character in Professor Layton and the Miracle Mask. His life revolves around his wealth, and believes money is the most important thing in the world.
Sterling wears a white suit over a dark blue long sleeved shirt, and orange tie. He also wears white trousers, dark brown shoes, and glasses. He has red hair and a mustache, and has a fake gold tooth.
Sterling gives you the following puzzles in Professor Layton and the Miracle Mask:
Chapter 3: The Battle of Monte d'Or
Professor Layton and the group encounter Sterling in the Merchant District, where he asks of Luke and Cookie to step out of his way. Cookie asks if he had seen her mother, and he tells them that he saw a woman rushing towards Carnival Square, seeming like she was looking for someone. They recognize her as Tanya, and continue to make their way to Carnival Square.
In a special episode, Sterling pays a visit to Madame Lapushka, and asks for gold cloth trimmed with diamonds. Since she didn't have anything so garish, she suggested a bear costume for him, to hide his overblown ego. It would also make his son happy, as he never spent much time with him, and it surprises Sterling how much she knew about his life. He agreed to change his life for his family, but refused to wear the bear costume.
Chapter 5: Miracles Unmasked
Professor Layton and the group once again encounter Sterling, who was admiring the neon lights complimenting his gold. Emmy complimented him that the artificial lights matched his charm, to which he accepts. He gives them a puzzle, and when completed, he was surprised "such lower class rabble" could grasp the basics of it, and Emmy tells him money isn't everything.
Chapter 7: The Reunion Inn
Sterling asks Professor Layton if he had heard of the Reunion Inn, and Layton asks him where it might be. He tells him that it was in the center of the city, and that only the wealthiest people could afford to stay there. He says they might be able to take a glimpse of it through the tram, and so Layton made it a plan to take a tram to see the hotel some time.
Outside the Dromedary Hotel, Luke notices that Sterling looked down, as he was thinking about the past. He himself found it unusual to be so down, so tried to refresh his mind with a puzzle. He felt sad as he had remembered when his wife took half of his money and left him for a poor man. He tells Luke that the only thing you can rely on is money, and that he was better off rich and alone rather than poor and loved.
"A narrow-minded parvenu whose life centers on money, money and more money. Sterling is so set on flaunting his wealth that even his false tooth had to be made of gold. He pours his vast income into gambling and looks down on the poor, but for all his prejudices, he will never be mean to a child."