The sentient reptilian species known as Nuknog originated from the planet Sump, their homeworld. These beings possessed bulbous heads and relatively small brains. Due to their limited mental capacity, they frequently struggled to achieve success within society, and were known for their volatile tempers. One example of a Nuknog was Ark Roose, a podracer who competed in the Boonta Eve Classic race, which occurred on the desert planet Tatooine in 32 BBY.