How do you find your unique Anime username

Im trying to find a unique anime username to have on google+/facebook/twitter/Steam etc but i can't really come up with one, all my friends and many other people i meet have good ones and unique but when i ask them they say that it came up randomly,... See more i really can't think of anything good like this
What is an anime that you can never find people that hate it?

a few times i have just tried searching around the internet for any Trigun haters because i can almost never find any, so then i got the question for this thread in my head XD