The Highbreed (alternatively spelled as HighBreed), formerly known as Atasians from the genus of the same name, are a powerful species from the planet Augstaka, and were the main antagonists in the first season of Ben 10: Alien Force.
The Highbreed were originally a white humanoid plant-like species with black hands and feet, a purple face with red eyes, along with red eyes on their chest. Above their black hands and feet are grayish splotches that temper off before the Highbreed's elbows and knees. They usually had four eyes on their face (though the count could range from three to six), and the placement of their eyes would sometimes differ.
The Highbreed had white skin flaps over their shoulders and stomachs, which could open to reveal two sets of wings with orange undersides and nutrient-collecting tendrils, respectively.
After the Omnitrix's DNA wave reconstructed the species' DNA, the majority of Highbreed now come in many different colors.