A ghost exterminator named Madame Mumu (a recycled version of the Geri and the Atrics piano player from The Muppet Show) arrives at Faffner Hall where Farkus enlists her to get rid of Fughetta at the time when Farkus has a cold. Guest Spot: Madame Mumu comes across the room where Los Lobos is performing where Cesar Rosas is finding it hard to adjust to the upbeat mood of the music ever since his girlfriend left him.