If you go here and login, you can change your email address or password on your AdventureQuest account. The best passwords are a minimum of eight characters in length. They are alpha numeric, case sensitive, and have special characters. A good example password would be Quest123.
Never give your password out to anyone. If you play on a public computer, be sure to close out all browsers when you are finished. If you think someone may know your password, log in immediately and change it.