Santa and the elves visit Endsville in "The Grim Adventures of Billy & Mandy Christmas Special," one of five episodes in the Cartoon Network's third volume of crazy Christmas capers. Other holiday-themed stories in this yuletide collection feature the stars of "Ed, Edd 'n' Eddy," "Camp Lazlo" and "Foster's Home for Imaginary Friends" engaging in some high-spirited high jinks as they celebrate the season.