My old username (Rick May) was the words in my last name rearranged. Now it's just my name.
Btw there is already a thread on this but it's old.
When I was ten or something I needed a gamer tag or whatever and I asked my dad if he could think of some good names. He remembered some book he had read where there was a character called Chun The Unavoidable. I thought it was pretty cool, so I used it and it has stuck with me since.