Burton's design sketch for B. Boy. And here's his origin story via the NY Times.
"B. was created, Frankenstein’s monster-style, from the leftover balloons used in children’s parties at the Great Ormond Street Hospital in London. Forbidden from playing with other children because of his jagged teeth and crazy-quilt stitching, B. retreated to a basement lair, where he obsesses over Albert Lamorisse’s film “The Red Balloon” and dreams that he, too, will be able to fly someday."
Just more evidence we live in awesome times.