Baba Yaga was the disguise of Curator Vronsky. He used the disguise to scare people away from his smuggling operation of Fabergé eggs.
She looks like a short old woman with leathery green grey skin and glowing yellow eyes, with sharp teeth and nails. She is dressed in traditional Russian peasant cloathing.
Baba Yaga was a demented terrifying creature who delighted in chasing and tormenting her victims. Her chief delight was said to be devouring her victims. She doesn't like uninvited guests in her house. She would give trespassers one break; chasing them out of her house and warn them not to return or else she would hunt them down and devour them. She also had a very loud and scary laugh (because Vronsky was using a voice modulator).
Powers and abilities
She could control her house; commanding it to rise up and attack and capture victims. She could fly by riding a giant mortar, wielding a giant pestle as a clubbing weapon.
Scooby-Doo! Mystery Incorporated
Baba Yaga attacked people who came near her house in Russia and when it was transported to Crystal Cove. Mystery Incorporated revealed that it was Curator Vronsky in disguise as Baba Yaga and discovered he used it to scare people away from the Baba Yaga's house exhibit while he smuggled Fabergé eggs in there.