Answer:
Santa's favorite entrance for home invasion
Shorter than my four siblings, but easily the strongest, Sometimes I wear a funny hat.
When one does not know what it is, then it is somethingอพ but when one knows what it is, then it is nothing.
He has a genie to thank for the fact that he married a princess.
I am a man but I swing from place to place and walk upside down just like a critter. Who am I?
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.