What about Simpson's
Krusty the Klown:
info taken from
http://www.snpp.com/lists.html
amalgam of celebrities Al Jolson, Johnny Carson, David Letterman, Jerry Lewis, Sid Caesar .
amalgam of clowns Rusty Nails (MG childhood clown), Bozo, Ronald McDonald.
cynical, world-weary, chain-smoking Flunky, the Late Night Viewer Mail Clown from Letterman (NBC).
Portland, Oregon children show host Ramblin' Rod.
National Lampoon's "Evil Clown Comics".
tv cable show "Crusty's Coop".
Krusty's first name, Herschel, is after Herschel Ostropoler, the 18th-century Russian-Jewish folk jester.
Washington clown J.P. Patches (where MG lived a few years) who had similar sideshows (Sideshow Mel, Corporal Punishment, etc.), smoking problem, etc.
comedian George Carlin.
had similar tax problems as Willie Nelson.
old Krusty in "Lisa's Wedding" looks alot like Grouch Marx did at the end of his life.
Binky the Clown (From the "Garfield and Friends" show. He was a very annoying clown who liked to scare the heck out of Garfield.)
has the same pie throwing antics of Soupy Sales.