Warped holidays: Billy & Mandy Save Christmas (2005)

From The Grim Adventures of Billy & Mandy:

"Billy & Mandy Save Christmas" closes out our Countdown to Christmas for 2018. The kids (Richard Horvitz, Grey DeLisle) and the Grim Reaper (Greg Eagles) head for the North Pole to help Santa (special guest star Gilbert Gottfried) with a most unusal problem, at least for him. Malcolm McDowell and Carol Kane are the other guest stars.

Edit, 2/12/21: The video has been deleted. In its place is the title card:

Series creator-executive producer Maxwell Atoms' art staff appears to have gotten some influence from John Kricfalusi's Ren & Stimpy. Billy's certainly no smarter than Stimpy........

Rating: C.