Momaw Nadon, also known as «Hammerhead,» was a male Ithorian who was exiled from his homeworld of Ithor as punishment for revealing the agricultural secrets of his species to the Galactic Empire in order to save the planet. He spent his exile on Tatooine and sympathized with the Alliance to Restore the Republic during the Galactic Civil War.

Momaw Nadon first appeared in the 1977 film Star Wars: Episode IV A New Hope but went unnamed until identified as «Hammerhead» for his Kenner Products action figure. He received his name and backstory in Galaxy Guide 1: A New Hope, a 1989 Star Wars Legends sourcebook written by Michael Stern and Grant S. Boucher for Star Wars: The Roleplaying Game. His name and portions of his backstory were confirmed to be canon by the reference book Ultimate Star Wars, which was released in 2015.