uhh this is basically a diagram of how wilt's tail works? Green- Protective skin that protects the organs. (also covers secondary organs) Blue- secondary organs; stores toxins. Yellow- sheath like skin that contains the main organs. Orange- Main organs; can harden in order to impale. Red- Pressurized thorn-like spears that contain toxins. Toxin can paralyze within 30 minutes. No immediate cure. if the toxin is given 24 hours, the body will flush it out of its system. This is not likely to happen, as there are normally no survivors.

also, The main organs can retreat into the very tip of the protective skin. a set of jaws will emerge from the organ to rip apart the victim. Most of the time the victim is alive in this slow and painful process.

..i should add for clarification that his face is not an actual mouth; the teeth on his face conceal his extremely light sensitive eye.