Beware of old women in the forest; especially if they live in a hut that can sprout chicken legs and run! I first came across Baba Yaga in an issue of Neil Gaiman’s Sandman comic. The story was titled “The Hunt” and was published in issue #38 back in June 1992. She wasn’t as scary as when I later encountered her in a couple of issues of the comic book Hellboy.
Here is a quote from Wikipedia’s page on the character:
‘In Slavic folklore, Baba Yaga is a supernatural being who appears as a deformed or ferocious-looking old woman. In Russian folklore, Baba Yaga flies around in a mortar, wields a pestle, and dwells deep in the forest in a hut usually described as standing on chicken legs.’