Question: Old accounts I can't access - delete?

So basically, I have multiple old accounts. At least two are associated with a defunct hotmail account (As in, when I try to log in on a Microsoft site with that address to trigger password recovery, it says it doesn't exist).

The accounts are:

Divine~Deoxys: http://www.pokecommunity.com/member.php?u=82425
Blue Oak: http://www.pokecommunity.com/member.php?u=230178
kyo tohma: http://www.pokecommunity.com/member.php?u=162913

Is there any way to get these deleted, given I can't prove my ownership due to the e-mail accounts being defunct? Given the way the world is with people digging up stuff from online pasts, I'd like to get rid of these relics of my (very) early teenage online life.

I will message you.