The Waterman was hired by Sir Richard Harcourt to eliminate Ringo Chen, is some kind of metahuman with the abilities of a eel born form by the nuclear testing in China, he came to gotham to capture and kill to Ringo, is a specialist in torture, he tested his methods with Ringo and Tommy, during the torture Ringo loses an eye and Tommy a Nipple. He finally died with the same old trick than Ringo used to escape from a military prison in China.
Powers
The waterman is capable to breathe through his gills, and stun his victims with some kind of internal voltage like a eel.