Tyler Derden.
Frank Zappa
And he’d probably give me shit for doing something so sheeplike (wearing the damned bracelet, that is)
Tyler Durden? Well, no.
You’re missing the obvious:
WWTLRD
What Would The Lone Ranger Do?
Ray Evernham
Steve Perry!
Bad examples?
Jack Chick
Jeffrey Dahmer
Dan Quayle
(BTW, they did a segment on this on MST3K…)
Forest Gump 
Bette Davis.
Elvis.
Genghis Khan.
Of course, the answer’s always the same: Kill, burn, destroy, rape, pillage, loot, and make a huge pyramid out of the skulls of my enemies for all to see. Unfortunately there’s all these stupid ordinances in the town I live in, so I can’t do it.
WWNMD?
Nicolo Machiavelli!
Richard Burton
No, no, not that one. Sir Richard Francis Burton. Explorer, writer, translator of the Book of a Thousand Nights and Night, founder of the Kama Shastra society (to ublish the Kama Sutra and other such texts in English translation) at the height of the Victorian Era. Co-Discoverer of the Sources of the Nile (see the movie “Mountains of the Moon”). All-around interesting guy. Philip Jose Farmer made him the hero of his novel “To Your Scattered Bodies Go”.
I don’t know about “do” but when I see a horrible movie I always think “What Would Mike Say?”
If you don’t love MST3K you won’t get it. If you do…
(You can also use Joel for Mike)
I gotta agree with Elvis and say, well, Elvis. Later Elvis, at that. I always figure that he would take a couple hundred pills, eat a fried peanut butter and banana sandwich, and buy someone a Cadillac. By comparison, anything I do has to make sense.
Dr. J
James Randi
Of course, there’s always the MST3K fan’s answer:
“What would Buffy St. Marie do?”
“Write a folk song!”
I have a WWBD bracelet that is supposed to be a “What Would Buddha Do” but of course, when I wear it, it means something else!
What Would JBirdman12 Do? Of course, when seeking guidance from a higher source, I wonder what Henry Rollins would do.
Lara Croft
Xena
Wilt Chamberlain 
The Little Prince.