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Key Facts

1st full appearance of Killer Croc

Batman #357 is commonly cited as Killer Croc's first appearance but he appears no different in his first cameo appearance in Detective Comics #523 than he does in Batman #357. In this issue, it is revealed that the previously obscured figure has crocodile features

2nd cameo appearance of Jason Todd, in one panel, mentioned by name

DC ⋅ 1948

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Key Facts

1st appearance of the Mad Hatter, Jervis Tetch

1st appearance of Vicki Vale

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Key Facts

1st appearance of Poison Ivy, Pamela Isley

Interior pin-up poster of Batman and Robin included

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Key Facts

1st appearance of Renee Montoya, later becomes the second Question

[ 2021 - Montoya is a character in Batwoman Season 3]

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Key Facts

1st appearance of Whisper A'Daire, a loyal agent in the employ of Ra's al Ghul

1st appearance of Kyle Abbot, Whisper's bodyguard who is also a shape-shifter

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