DNAliens

The DNAliens are part-human, part-alien drones who serve the Highbreed despite their racism. They often use special identity masks that can make them appear human. They also thrive on cold weather such as snow, so heat successfully kills them, or at the very least, damages them beyond repair, so Swampfire's heat blasts are an effective weapon against the DNAliens. They also have invented a parasite in their image that turns humans into DNAliens, as explained by a DNAlien in which the DNAlien half of the parasite controls the human half because the human half is "repulsive" to them. These parasites were going to be shipped off in large trucks possibly all over Earth, but were destroyed when Ben used Jetray. One example of these parasites is when Ken was forcefully turned into an almost-complete DNAlien,but when Ben tried to remove it, Ben somehow entered the Omnitrix which possessed a computer voice and asked Ben for the option to remove the "severe geneic damage" caused and within the Omnitrix removed the DNAlien parasite completely.