Religion: Christian (denomination unknown)
Name: The Groonk
First Appearance: Thor (vol. 1) #444 (Feb. 1992): "How the Groonk Stole Christmas!"
Number of Appearances: 1
Ally: Cindy Lou
Note: analog to Grinch (Dr. Seus character) in Christmas story
The Groonk was presumably a Morlock, a member of the group of outcast mutants who lived beneath New York City streets. The Groonk stole Christmas presents for homeless people living in sewers - in underground areas below New York City.