Ithorians, commonly referred to as hammerheads or as leathernecks as an insult, were a sentient species from the planet Ithor. Ithorians had two mouths on the opposite sides of their necks, giving them a deep, rumbling voice. Most Ithorians were peaceful and revered nature. The species’ pacifism was so strong that they exiled violent individuals from their homeworld of Ithor. Notable Ithorians include Dok-Ondar, a collector on Batuu, and Momaw Nadon, an Ithorian gardener who was exiled from his homeworld.

Ottegans were a genetic offshoot of the sentient Ithorian species, with whom they shared the Ottega system. Their physiology was similar to that of the Ithorians, with a hammer-shaped head and an elongated face with wide-set eyes, except that Ottegans had only one mouth set low on their necks while the Ithorians had two, one on either side. As a result, Ithorians referred to their cousins as hrumgatha—»lone mouths»—and joked that Ottegans’ physiology meant that they need to talk twice as much to be heard. Geneticists argued for millennia about the exact relationship between the two species.

Praster Ommlen, an Ottegan devotee of the Sacred Order of Ramulus, was part of Maz Kanata‘s court at the time of the Battle of Takodana.