Probably not quite as forbidden as you may either fear or want, depending on your personal taste.
Thursday, October 5th, 2017
Charles Martinet talks about his career voicing Mario, Luigi, Waluigi, and more for Nintendo and other companies at Dragon Con 2017.
Tuesday, January 6th, 2015
A dedicated Waluigi fan creates a custom Waluigi amiibo (made using the base from a Luigi amiibo) that sold for $199 in an eBay auction.