I'd always thought the albino penguins were hokey because when I read the story I didn't picture them having a menacing appearance. I imagined a garden variety penguin, only 6 ft. tall and white. The whole thing seemed quite goofy and out of place. It's been a while since I read "At the Mountains of Madness" so I don't remember if Lovecraft threw in any sinister descriptors for them.
Tanja Wooten's incredibly creepy interpretation of the penguins is great though. If I ever read the story again, I'm picturing them like this.

Awesome! Why did Lovecraft keep referring to penguins as "grotesque"? Thank god he did not live to see Happy Feet.