This topic already exists here
. It is visible on the first page of the General Discussion board where you posted this thread. It also has almost exactly the same title.
Bandai's Contact Us page is located here
. You can find it by clicking on the "contact us" link on the front page of Bandai.com. The page I linked to contains a long "No Submission Policy" where they say that they are not interested in any of our ideas.
Please do not send any creative or original materials such as ideas for toys, games or other products, or any creative suggestions, ideas, notes, drawings, concepts or other information. Unsolicited submissions will be deleted, unread.
A few minutes of searching can answer all your questions!
Hope that helps.