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 like the Revival Machine, which was used to revive Grim with his bones, though Grim turned into a skeleton dog. He also made a machine that sends people and mobs to the prehistoric era. He is also very crazy. He jumps on tables, which annoys Dan. He even sometimes bought and ate an "age apple" that he saw on TV but rather than making him younger, it made him older but it was quickly fixed by his mom.