There's a terrifying reference in WickedWicked fans noted the eerie reference to Professor Mombi, a nod to the frightening elements present in the 1985 Disney film Return to Oz.
'Return To Oz' Is The Scariest Kids' Movie No One Is Talking AboutNot all children's films end happily; some, like Return To Oz, explore darker themes that may haunt viewers well into adulthood.