In a nod toward the classic daily strips of yesteryear, the cartoonist Bill Griffith continues the tradition by always centering a hand-lettered episode subtitle above each of his Zippy strips.
However, Bill Griffith's Zippy, in an odd technological twist by DailyINK, is displayed small on Sunday and large in the dailies.
Bill Griffith, in his daily strip Zippy the Pinhead, used his strip as a forum to criticize Adams' artwork as simplistic.
Muffler Men have also made appearances as characters in the comic strip "Zippy the Pinhead" by Bill Griffith, often in conversation with Zippy.
The Big Hammer briefly became a character in the nationally syndicated comic strip Zippy the Pinhead by Bill Griffith.
Additionally, Schlitzie has been cited as the inspiration for Bill Griffith's comic strip Zippy the Pinhead.
Young Lust (comics), an underground comics anthology series co-founded by Bill Griffith
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