Dr Trayaurus is a librarian villager that is the owner of the lab along with Dan. They are the one who builds the contraptions in the lab. Overall, he is a very smart scientist. He made a lot of contraptions. For example, the "Revival Machine". If you are curious of what it does, it was used to revive Grim with his bones, although Grim turned into a skeleton dog. He also made a machine that send mobs to the prehistoric era. As you can see, he is a very smart scientist. Although, he is also very crazy. He jumps on tables, which always annoys Dan.