He is the resident grouch of Whoville, living high above the Whos on Mount Crumpit with his dog Max and usually spies on them. The Grinch is a Who-hater (except for the ending of the special, where he changes character completely). The Grinch appeared in Seussical the Musical, portrayed by Patrick Page.

What species is the Grinch?

Dr. Seuss never defined a species or race for The Grinch however, the Grinch character is/ was the EXACT same age as Theodore Geisel, aka Dr. Seuss. His granddaughter stated that the Cat in the Hat was the author on his good days and Grinch was him on his bad days.

Are there other grinches?

The Grinch is actually the same species as the Who’s. He is a different subspecies though, explaining his greenness. The ‘Grinch’ kind of Who are actually quite numerous, but live quite a distance away from Whoville.