Katrielle Layton is a fictional character and the protagonist of the video game series Layton, specifically featured in Katrielle and the Millionaires' Conspiracy. She is the daughter of the famous detective Hershel Layton and follows in his footsteps as a young detective herself. Katrielle is known for her intelligence, charm, and determination to solve mysteries. In her adventures, Katrielle often works alongside her talking dog, Sherl, and a group of quirky characters. The game combines elements of puzzle-solving and storytelling, allowing players to engage with various challenges while uncovering intriguing cases in the vibrant world of London.