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Hammerface, a.k.a. Experiment 033, is an illegal genetic experiment created by Jumba Jookiba. He is designed to hammer nails around Jumba's house. He was captured by Gantu, but was rescued in "Snafu". His one true place is as an employee to the construction crew for his nail-driving skills with the local charities to help make houses and in Jumba's custody.