Public Domain Super Heroes

Dr. X

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The Mysterious Dr. X

Real Name


First Appearance

Startling Comics vol. 1 #1 (June, 1940)

Original Publisher


Created by


Golden Age Origin

Dr. X was a master of the occult sciences, who conducted experiments in an observatory high in the andes. He was assisted by his niece, Cynthia, and her heroic fiance Bob Stone.  Dr. X's main invention was a ray that could transport Bob and Cynthia to other worlds.  Dr. X was considered the man to turn to when Washington D.C. was baffled in how to deal with catastrophic problems.

Public Domain Appearances

Startling Comics vol. 1 #1, vol. 2 #1 [4]

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