WotLK Characters is gone

[GutoWylde69]

Hello, I would like to know why my characters have disappeared from the servers and if any way to retrieve them?
Thankful!

[GnomeChewer]

http://forum.warmane.com/showthread.php?t=372953 This and past clean-ups is a possibility assuming you have not logged into the characters in a long time.
Really more information is needed to determine.
Did anyone have access to your accounts or did you compromise the security of your account by using the account details for other wow related website? - If so, you may have been hacked/scammed.

If this was recently you can try to go to My Account > Services > Your Server > Character Restoration.