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Bill Finger

DC Oct 1961

Detective Comics #296

Detective Comics #296
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1st appearance of Planet Master, a scientist-turned-criminal after being exposed to cases from a meteor
1st appearance of Edward Burke, later becomes the second Planet Master in Outsiders #21
DC Dec 1961

Detective Comics #298

Detective Comics #298
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1st appearance of the second Clayface, Matt Hagen, a scuba diver who had come into contact with a clay-like substance that compromised his molecular structure
[October 2024 - Alan Tudyk will voice Clayface in Creature Commandos / November 2024 - a Clayface movie is in development with writer Matt Flanagan (The Haunting of Hill House)]
DC Jun 1964

Detective Comics #328

Detective Comics #328
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$8
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1st appearance of Harriet Cooper, the aunt of Dick Grayson who was a character adapted for the 1966 Batman TV series
Introduction of Elongated Man's nose twitching when he encounters a mystery

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