The Greatest Mad Hatter of All

I have met the craziest mad hatter of all. Is he mad? Is he bad? Is he goofy? Is he tall. He is a shrimp with bad teeth, and he is small. Does he do weird things? Is he a bell of the crazy bird ball? This hater is Celtic, mystical, and was born in a caul. He is a distant cousin of the Biblical characters Saul and Paul. He sounds normal said the other. Will he be around in the fall? He is here now, but invisible, said my imaginative cousin, Mal.