According to voice actor Mike Vaughn (Ludwig and Iggy), only one recording session for the Koopalings was done, in October 2009 for "New Super Mario Bros. Wii", and those same audio files have been reused in several later games, most recently "Super Mario Maker 2". Vaughn has publicly called this action a copyright infringement by Nintendo as the usage release signed by both parties prohibited Nintendo from using those files in advertisements or promotions. While not specifically restricting usage in future games, Vaughn asked, "Who in their right mind would have thought that a major game producer would use the same audio in future titles? Seems like a great way to make really bad, repetitive games to me." Eventually, new voice actors were hired to record the Koopalings for "Mario Kart 8", with the exception of Roy.