Joe Blair was a private detective whose superhero alter ego was named

Zippo. Zippo was a very different sort of hero during the Golden Age as he didn’t have super powers with which to fight crime.   Â
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Instead, he had an armored suit with motorized pistons which operated wheeled boots that enabled him to travel as fast as a speeding automobile, usually around 65 MPH.   The wheels also included razor sharp treads which enabled him to cut through metal. Â
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The character is also considered Public Domain as the original publisher went out of business and the copyrights were never renewed prior to 1977.Â