Nauls was a cook stationed at American Antarctic research station, U.S. Outpost 31. The character appears in the 1982 film The Thing and was portrayed by actor T.K. Carter. His fate is also briefly touched upon in the 1991 comic series The Thing From Another World.
During the winter of 1982, a group of Norwegians chased a shape-shifting extraterrestrial organism (imitating an Alaskan Malamute) from their ruined research station to U.S. Outpost 31. After the Norwegians get themselves killed and accidentally destroy their helicopter, Nauls, Windows and Fuchs rush outside to extinguish the blaze. The men carry the Norwegian to the rec room, while Nauls flippantly suggests that they may be at war with Norway. After having a gunshot wound stitched-up by Dr. Copper, Bennings retires to his living quarters and complains to Nauls over the intercom when the cook's music prevents him from sleeping. Several hours later, as evening fell, Copper and helicopter pilot R.J. MacReady return from their investigation of the Norwegian camp with the charred remains of a split-faced creature - which all present, including Nauls, stare at in disgust. As the creature is autopsied, Nauls and Clark play a game of pool in the rec room.
During the night, he is awoken by a fire alarm triggered by MacReady. He proceeds to the dog kennels to discover what the source of the disturbance is and along with the other men, he witnesses the dog-thing assimilating the outpost's sled dogs. After the creature is incinerated by Childs an expedition is made to the UFO crash site. Following their return, as the men discuss the ramifications of their discovery, Nauls skates up to chastise the owner of a pair of shredded underwear for leaving them in the kitchen trash can (confirming that the alien has already assimilated at least one person in the camp - tearing through their clothes as it took them over). After performing tests on the Thing remains, Dr. Copper decides to temporarily put them into storage; during the moving of which Bennings is assimilated. Nauls, along with the other men, is drawn outside by the discovery of a half-assimilated Bennings, who is promptly incinerated.
After Fuchs, goes missing during a deliberate power outage, MacReady organizes a search party consisting of himself, Nauls and Windows. Outside, they discover a severely burned body in the snow, the only distinguishable feature of which is a pair of spectacles. Sending Windows back to tell the others, he and Nauls head to the pilot's shack to investigate unusual activity. After approximately forty minutes has elapsed, Nauls makes his way back to the main building entrance and explains that he cut MacReady loose after discovering a scrap of torn clothing containing his name tag. Finding his way back to camp, MacReady breaks into the storage room and threatens the rest of the crew with dynamite. In the course of the stand-off, Nauls and Norris tackle him and the latter suffers a heart attack. The men rush him to the medical lab, where Copper attempts to re-start Norris' heart by defibrillation - only to reveal him to be an imposter. The creature is incinerated, and in a bid to determine the identity of the remaining crew, MacReady improvises a rudimentary blood-test involving a heated copper wire and samples taken from the men. During testing, Palmer is revealed to be a Thing and fatally mauls Windows before being destroyed by MacReady. Following the chaos, Nauls assists Mac in finishing the tests - concluding with Garry's, which harmlessly fizzles upon contact - proving his humanity.
The surviving crew set out to the tool shed in order to administer the test to the incarcerated Blair, only to find that he has escaped by tunnelling his way underground. They follow the path and discover that not only had Blair been assimilated, but he had been constructing a small flying vehicle of alien design underneath the tool shed. After the facility loses power, MacReady realizes that the creature now wants to freeze again so a future rescue team will find it. The remaining crew acknowledge that they will not survive and set about destroying the facility in hopes of killing the creature. While setting explosives in the outpost's underground generator room, Garry is attacked and assimilated by the Blair-Thing. Nauls follows the sounds of the creature and is never seen again. He was most likely assimilated by The Thing and/or obliterated by the subsequent explosion that destroyed the facility. Alternatively, according to the novelization, he is chased and cornered by the Blair-Thing and commits suicide rather being assimilated.