Interesting lil buggers. The organ(s) is(are) visible due to translucent skin. Somewhat the texture of gellatin. Their feet collection consists of hundreds of tiny polyps, each having enough suction power to withstand even the strongest of anti-suction weapons (:P). Hundreds drop from pods in the sky at a time, landing(hopefully) on the unsuspecting victim. Blindy, they crawl inbetween armour plates unnoticed due to their ability to camouflage with ease (jellyskin). Sadly, their camoflauge is their only form of defense. Once they grasp hold of the victim, they send chemical tracers to the brain, after which take control of this half-zombified unit. They continue to grow living off the muscle tissue of the infected, resulting in fairly ineffective units. Eventually, once they have grown to a supple size, they leave the host (which at this point is literally nothing but skin and bone, probably just bone) and crawl around slowly. Nobody knows what happens after this because they are usually fat, juciy, easy targets for other sheiks. It will be assumed that they enlarge themselves so big that they just spontaneously burst in a shower of wormy gore. The average Sheik can range in size from an earthworm to the size of a small seal.
. However, the Sheiks do not grow in an animalistic sense, but in a plant-like sense. They 