Underwatergargoyle für MGC.

If Gargoyles were to live underwater, evolution would have gone in many different ways.
In our imagination, mermen always have a powerful fishtail instead of legs. But Gargoyles already have a tail, so most propably, this tail would have evolved into a fishtail, while the legs would make more sense in the form of additional flippers.
And to the last, wings are not useful unerwater. Hence they may be accrued to the torso, like it is seen at Lexington's wings, enveloping the whole body, or perhaps function as a huge, twofolded dorsal fin, as it can be seen in my picture.