'Twas the Night Before Bumpy (1995)

The following trio of lovable characters has emerged from every child's imagination and landed under the bed of a young boy: Mr. Bumpy, the zany green, purple-warted mischievous sock-eating monster with the uncontrollable energy of a 10 year old, and his two best friends Squishington and Molly Coddle. The gang stars in a holiday musical adventure in which Mr. Bumpy and Squishington head for the North Pole to bag some Christmas loot. En route, the misdirected buddies are sidetracked and find themselves in the jungles of Peru - where they are held captive by an earthworm soldier.

Unfortunately the movie 'Twas the Night Before Bumpy is not yet available on HBO Max.