Madam Know-it-all

Madam Know-it-all is an evil fortune-teller introduced at the very ending at the 78-storey treehouse. She tried to wipe all the world's people's brains by answering their questions. She was soon put to an end when Mr. Big Nose's nose exploded and all that was left of her, was her 3 snakes which Jill took care of. She hypnotized Andy and Terry but they were sent to Jill's learning school and she restored their knowledge back, however she made it a bit too high for Andy who was described as a 'brainiac' at the time.

Appearance
Madam Know-it-all appears to have a bright-colored headscarf, large gold earrings, a necklace made out of gold coins, a fancy gown, a crystal ball and 3 snakes.