This is Abe Sapien from the Movies Hellboy and Hellboy 2 The Golden Army. (2004-2008) Abe was discovered on the night abraham linocon died. He is Hellboys partner and close friend. He is phycic and amphibeous.
This is the back of the breathing aparatis (commonly mistaken for a toilet seat) he must wear when he is out of the water for extended periods.