Public Domain Super Heroes


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Major Mars and Grag

Real Name


First Appearance

Exciting Comics #1 (1940)

Original Publisher


Created by

Max Plaisted

Golden Age Origin

Robot assistant to Major Mars in the 40th Century. Grag houses an artificial intelligence in its synthetic brain and has great physical strength and a powerful damage resistant shiny metal body. He was built by Major Mars and thanks to his synthetic brain he can think and speak. Grag helps the Major defeat Emperor Kells of Jupiter from turning the residents of the Jupiter colony into beast men.

Major Mars and Grag

Golden Age Appearances

  • Exciting' Comics # (issues renewed from 1 (April 1940) to 23 (Vol 8 #2 Dec 1942))


Major Mars was initially created as a pulp fiction character called Captain Future and also had a robot assistant named Grag.

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