Luke Triton in Professor Layton and the Azran Legacy.
Luke Triton is Professor Layton's apprentice. He has a fondness for puzzles. And also, like the Professor, he loves his tea.
The first time the Professor and Luke met was in Professor Layton and the Last Specter, and ever since, Luke has been helping Layton solve puzzles, solve mysteries, and drink tea. His mother and his father both live in London, England, and his father is, like Layton, an archaeologist. Luke later left Layton in Professor Layton and the Unwound Future.