Designed to drive in nails around Jumba's house with his hammer-shaped head/face, but at times he will pound living things. He was bought and trained by Gantu, turned into an army of 100 weaklings by Dupe, and rescued by Lilo's rescue team in "Snafu." 033 was called "Hammerhead" by Pleakley in "The Asteroid".His one true place is working with the poor by hammering in the nails for poorhouses. He was voiced by Maurice LaMarche.
All 624 experiments including hammerface were round up by Leroy and taken to a stadium to be destroyed. However, Lilo, Stitch, Jumba, Pleakley, Reuben and Gantu arrived before the experiments could be destroyed
Hammerface participated in the following battle between the experiments and the Leroy clones.
The Leroys soon gained the upper hand in the battle, but were defeated when Lilo, Stitch, Reuben and several other experiments performed the song Aloha Oe, which caused the Leroy army to shut down due to the original Leroy's failsafe.