This stixification is a bit of the book that I drew today. I have never before drawn Walter with his honest-to-god mustache or his honest-to-God glasses, because stix look better without those things, and also he didn't walk around in a lab coat all the time, as you can imagine. So this is about as literal a rendition of him as can be achieved in stix form.
One of the things I find so interesting about Walter is his trickster-god-like ability to be different people in different situations. This Very Serious Doctor who smokes a pipe is the same guy who stole a man's cock ring and drove around in the Lobotomobile. He's also the same guy who said "Gosh" and took his kids on hiking trips to swimming holes, and the same guy who wrote limericks that were slightly less ghastly than the rest of his poetry (see, following the rules can be a good idea, Doctor), and the same guy who cheated on his wife relentlessly and couldn't sleep without a fistful of Nembutal. Once when he went without sleeping for long enough he had what he called a "nervous breakdown," and had to lie in bed for a couple of weeks decorating a house in his mind. Who were you, Walter? Rather, who weren't you?