The Blue Aliens are strange aliens that have blue fur, several eyes, a long tongue, and fingernails that are black and white. They live on a blue planet (possibly Uranus or Neptune). They closely resemble anteaters. They are seen in "Troq" and "Transformation."
In "Troq," a blue alien is shown in a picture where it was attacked by Locrix. In "Transformation," Starfire visits the blue planet and sees two blue aliens talking to each other. She knows she has the same fingernails as they do, but due to her looks, the blue aliens run away from her. During the mission to find Starfire, Robin and the other members visit the blue planet. The blue aliens help by pointing with their tongues in the direction Starfire went.