ZY was part of a team of former FBI agents who assisted the Masked Marvel in his war against crime.

ZY and his fellow teammates, ZR and ZL, had no superpowers, but used Masked Marvel's equipment and firearms.

*Keen Detective Funnies vol. 2#7

*[http://www.dpccomics.pwp.blueyonder.co.uk/theamericancomicshop/goldenagedatabase/index.php?page=2&section=z Golden Age Heroes Directory]
Category:Sidekicks
Category:Centaur Publications Characters
Category:1939 Debuts
Category:Ben Thompson-Creator
Category:Comic Book Characters
Category:Male Characters
Category:FBI Agents
Category:Real Name Unknown
Category:Non-Powered Characters
Category:Heroes
Category:Malibu Characters