Milli Vanilli
Milli Vanilli was a band consisting of Rob Pilatus (May 14, 1966 – April 2, 1998) and Fab Morvan (June 8, 1965 – ). They are apparently Princess Toadstool's favorite rock band.
They appeared in The Adventures of Super Mario Bros. 3 once, in the episode "Kootie Pie Rocks". In the episode, Cheatsy overhears the Mario Brothers talking about going to a rock concert with Princess Toadstool, for Milli Vanilli. Cheatsy made his way back to Kastle Koopa and explained to Kootie Pie what the Mario Brothers intended to do. Kootie Pie was not pleased about the Princess getting something that she wasn't. In the middle of the band's concert, Cheatsy and King Koopa appeared in their Doomship and kidnapped the two singers, then made their way back to Kastle Koopa. Kootie Pie wanted the two rock singers to sing for her but they refused. Kootie Pie was enraged, and she turned the two into accountants.
Mario, Luigi, the Princess, and Toad disguised themselves and helped Milli Vanilli escape from the castle, then returned them to their concert.
Milli Vanilli was the only guest appearance on The Adventures of Super Mario Bros. 3; whereas the preceding show, The Super Mario Bros. Super Show!, had several during the live-action segments.