The Ageless: The Applebyes made a deal with Zook that allows them to remain young for over 40 years when they give him sacrifices. Once Zook is defeated, the Applebyes age to their real ages.
Bitch in Sheep's Clothing: The Applebyes act all nice and welcoming to the heroes, but as soon as the time to feed Zook comes, they reveal their true faces.