The 'Da Hadez' Family..
The first time I had to pick a username (for compuserve) Hades was already taken. Back then it was still cool (bearing in mind this was over 20 years ago and I was, like, 16) to substitute z for s. It kind of stuck and I've used it since for usernames, domain names, game characters and so on since because it was rarely used (sadly no longer the case).
The 'Da' was supposed to be 'Da' as in 'Da Vinci' so 'Da Hadez' means 'From (badly-spelt) Hell'. I hope BM players are highbrow enough not to assume it is 'Da' as in 'Da Man' or 'Da Bomb' but either way my meaning gave me inspiration for the starting point of my family history on the wiki.
First names are designed to be easy to pronounce, spell and remember and so scan nicely with the surname.