With skin that shifts colours to match their surroundings, Chameleon Skinks are very hard to spot. This means that the enemy suffers an additional -1 to hit when shooting at them.
In addition, they are able to sneak up extremely close to their foes. Chameleon Skinks are deployed at the same time as Scouts, and can be placed in one of two ways. Either place them exactly like Scouts, but with no minimum distance between them and the enemy, or place them in sight of the enemy (event in the open), but more than 12" away from them.