Wow you're the first person to ever ask me what I wanted a Pokemon to be nick named :D. Ouroboros would be great.
it's going to be yours so might as well make it to your liking ^__^
Did you want a particular nature/nickname. I have a bunch sitting in my box with all kinds of different natures if that of an interest to you, unless you intend to rebreed yourself for something specific. --- "I love Role-Playing ^_^: http://z11.invisionfree.com/UltraAnime_X/index.php"