Chameleons were huge, unintelligent, reptilians which lived along with Buhlagh on LV-1201. Because of their long arms and short legs, Chameleons walk in a gorilla-like fashion. When they are undisturbed, they distort into a ball-like form, resembling some kind of rock or plant. During this form, their skin turns to brownish yellow. Another notable trait is their ability to ionize the oxygen in the air to create a concentrated beam which is then expelled from their mouth. This beam is concussive and is mainly used to repel attackers.
Five centuries later, when the Weyland-Yutani Corporation discovered LV-1201, there were no Chameleons to be found. So, it was assumed that the species was entirely wiped out by the Aliens.