Dr. Quack is the secondary antagonist of Yooka-Laylee and Capital B's chief technician. He is the ruthless and traitorous head of Quack Corp, a business recently acquired by Hivory Towers, and is working hard to satisfy the demands, and create inventions for his new boss, Capital B.
To support the development of Capital B's plans, Dr. Quack stole all the research of his colleague Dr. Puzz and left her unemployed. He also created the Novelizer 64, an invention that can steal all the books in the world.
Dr. Quack holds a Quickfire Quiz in-between various sections of Hivory Towers. It is a multiple-choice quiz with different questions about the previous worlds.