I think i would have to go for a dragon (yeah its not the most interesting of choices but its a dragon and i'm welsh)
Im sure the flood can come up with a little better and more interesting
[url]http://en.wikipedia.org/wiki/List_of_legendary_creatures[/url]
Here's a wiki list for inspiration
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I want the smartest and most powerful wise super awesome ultra rich flying transformer alien predator dog submarine that shoots tactical nukes that flies and can swim and makes me richer than bill gates and more powerful than anything in the universe space ship that is the biggest spaceship ever and is the most advanced and has restaurants and is bigger than the universes biggest galaxy star blackhole and makes coffee and has the best restaurants ever and makes Vien crap his pants with his own tiny little crap ship and has the most missiles and is really powerful and can shapeshift and grant wishes and teaches me to use proper grammar and punctuation and in some cases speling and makes me tea and dresses me up and gives me all the ladies who are hot and stuff.