I am working on creating different Mega Man style animalbots. I have quite a few that I have worked on. Serpion is one of my favs. His tail is as deadly as a scorpion. One strike from his tail will cause his prey to drop dead. The sting of his tail can also paralyze his prey, making them helpless. His fangs are a pair of long, hollow, venom-injecting fangs attached to movable bones of the upper jaw that are folded back in the mouth when not in use. It's bite is deadly .The jaws close on impact and powerful muscles that surround the venom glands contract to inject the venom as the fangs penetrate. This action is very fast; in defensive strikes it can be more a stab than a bite. Serpions use this mechanism primarily for immobilization and digestion of prey. Secondarily it is used for self-defense.
His armor makes him invisible to his prey. There is a spot on his neck that when it is hit makes him visible to others. That is his only weakness. In order to defeat him he must be struck ten times and then he disappears.