Making a statue that big isn't that hard, it's paying for it that's the tricky part. Getting it into a convention is a different matter all together.
Heck, I could probably do it myself if I had the time and funding, but the only ways to get funding that I know of would draw NCSoft's ire, plus I have no access to a forge to do proper bronzing of something on that scale, since I only know traditional methods of sculpting such statues... Besides, where would I keep the thing as I worked on it, and how would I transport it to a convention to put on display, let alone, where would it's permanent home be (because my Dad might object to dropping it in our front lawn...)...?