Aliens are small three-eyed minifigures from the Toy Storytheme. In descriptions of Toy Story sets this figure is just called Alien (figure).
The Alien has a green head and green hands, with a bright blue torso and short legs of the same colour. The head is a new mould, wide with three eyes and a single antenna on top. Printing of a planet and a belt is on the torso. In different variations, blue and yellow splotches are also present, along with a scuff mark.