Credit goes to AMS for the pose on this one.
Predator
Wearing a special suit that allows him to move at incredible speeds underwater as well as breath while submerged without needing a breathing apparatus, the Predator made a big name for himself as an eco-terrorist, causing chaos for anyone that might threaten the ocean. Over time he seems to have forgotten his motivations however, now working simply as a specialty mercenary that handles underwater operations targeting ships, submarines, or secret bases on the sea floor.
