"Louie, the Lilac"
Every bit as awesomely ridiculous as I remember.
"Some day, I'm going to control the flower market of the entire world! And with it, the Flower Generation!"
(I always wonder if it's a sign of schizophrenia if Louie is one of my favorite Batman villains, though I'm such a "realistic Batman purist" that I can't stand him being in the Justice League.)