Santa Claus: AC -10; MV 9"; HD 10; hp 100; SD See below, AL Very Nice; S M (but fat); S 14, I 18, W 19, C 19, D 12, Ch 20 (25 for pixies, wood elves and faerie folk) 3350 xp.
If anyone attempts to attack Santa Claus they must save vs. spells. Failure means that the character in question must suffer the effects of the 8th level magic-user spell symbol of hopelessness. Santa also radiates a sphere of happiness. All characters within 20 feet must save vs. spells or become very happy and friendly with everyone. Once characters step outside the sphere they will return to normal, but will have to save again if they re-enter the circle.
Santa will reqard anyone who frees him by presenting them with a harmless, but magical toy, eg Elven rollerskates (movement 18" in silence); Cardboard armour +1 (AC 13), an Otto's Irresistible Teddy Bear (save vs. death magic or hug the teddy for 1-10 rounds); Tenser's Floating Jellybaby (when eaten acts as a potion of levitation).
From Do Not Ask... For Whom The Bell Jingles A Not-Terribly-Serious AD&D Mini-Module for Christmas, by P Howard, G Baker and L King; IMAGINE magazine #21, December 1984