I'm asking for a OP-bro, but they're wondering if a mermaid would retain her appearance? While the mermaid part might not be a big deal, she's about a hundred feet tall (http://images1.wikia.nocookie.net/__cb20110804030208/onepiece/images/thumb/6/62/Shirahoshi_FB.jpg/830px-Shirahoshi_FB.jpg)?

Would she need to be downsized or humanized? Or both?